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Weeks 13 to 15 of pregnancy – what to expect

As you enter the second trimester of your first pregnancy, weekly progress becomes a little less defined as the baby’s rate of growth speeds up considerably during weeks 13 to 15.

According to my man’s guide to baby growth during pregnancy, the baby has had a serious growth spurt and is now around the size of a scotch egg – a world away from the golf ball it was just a few weeks ago.

As a result, your pregnant other half should now be beginning to show, with a small and perfectly formed mini baby bump now visible for the world to see (if they look closely enough).

If you haven’t already, make sure you start taking photos of the expanding bump so you can keep track of progress – just as this well-known inspirational dad so famously did (worth a watch!).

40 weeks pregnancy bump video by Tom Fletcher

TOP TIP – set a reminder in your diary to take a bump photo every week (as a minimum) always in the same location and with your pregnant other half wearing the same clothes so you can really see the changes…you won’t regret it further down the line.

As a result of the baby’s phenomenal growth, don’t be shocked if your pregnant partner starts to get some phantom pains in her abdomen.

These are likely to be ’round ligament pain’, which is caused by the stretching of the ligaments that hold her uterus in place. The good news is that these are perfectly normal but of course if you are at all worried by them, do talk it through with your doctor.

It’s worth mentioning as well that, according to my reading and my wife’s personal experience, if the mother to be was previously into keeping fit and did a lot of sit ups, crunches or core work, expect these pains to be more acute.

Warning: the pains are worst felt when coughing or sneezing, so get her to hold her lower abdomen before doing either action to reduce the severity of the stabbing pain…trust me, it works!

While most people may not yet notice the growing baby bump though (or be too polite/afraid to mention it for fear that she isn’t pregnant after all) they would have to be rather unobservant to miss your other half’s ravenous appetite and her ever-growing bust during these pivotal weeks.

Pregnancy Hooters and fried food in weeks 13-15

If she’s anything like my wife, her boobs will have almost certainly doubled in size by week 15. Enjoy this time guys (although as I’ve said before, they’re for looking, not touching!) as once she’d finished breastfeeding in a year or so’s time, they’ll almost certainly deflate back to their original size (if not smaller…yikes!).

Luckily, for most pregnant ladies, in these weeks the morning sickness and general nightmarish nausea will finally start to subside. Expect more and more ‘good days’ where she feels at the top of her game, but (another warning) there are times when it returns with a vengeance, catching her and you by surprise when you least expect it.

For my top tips on how expectant dads can help reduce these morning sickness related mood swings, click here.

Finally, after the reassurances of the 12 week ultrasound scan, in weeks 13 to 15 you will by now be preparing to tell the world and his wife about your exciting news (if you haven’t already).

Whether you decide to do it in person over a family roast, at a meeting in front of all your work colleagues or to all your followers on social media, there really is nothing quite like the rush of telling your nearest and dearest that you are pregnant. The pure joy on their faces and the excitement that shines through in all their congratulatory messages is truly amazing.

Just be prepared to drink a lot of champagne, your other half’s share included – after all, as an expectant dad, it’s your responsibility to drink for two for the next six months!

Now just 25 weeks left to go…

I hope you’ve enjoyed today’s blog. As always, we’d love to hear from you too, so please do share your personal experiences of weeks 13 to 15 of pregnancy with the group via the comments section below.

And for more daily updates, do stay in touch with YOUTHEDADDY via Instagram, Twitter and Pinterest.

Diary of an imperfect mum - featuring my post on the weeks 13 to 15 of pregnancy


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  1. Becky, Cuddle Fairy
    31st March 2016 / 3:02 pm

    lol the hooter girls photo is a hilarious analogy to early pregnancy! I couldn’t eat much in the first trimester, I had morning sickness so I lived on cream crackers. Best of luck to you & your wife! #FamilyFun

    • youthedaddy
      31st March 2016 / 3:35 pm

      Thanks Becky! Glad it tickled you!

  2. 31st March 2016 / 2:41 pm

    I love that video it is such a cool idea and setting a phone reminder is also a brilliant idea, especially for someone like me. I hope you do this I’d love to see your version. TY for linking up with #FamilyFun

    • youthedaddy
      31st March 2016 / 2:43 pm

      I’ll see what I can do!