Honestly, that sounds more like round ligament pain than cramping because of an issue with the baby. I had something similar then during both pregnancies, mostly on the right side. I don't get it often now at 24 weeks.

I would still mention it to the doc for reassurance and even consider calling if it gets worse. Peace of mind is invaluable!

Round ligament pain is the first thing that came to my mind as well. I got it a lot during my first trimester. I'm now at 25 weeks and the only time usually feel it is while I'm exercising. If I wear a belly band while exercising, it helps diminish that pain. I usually feel the pain more on my right side as well, but I have felt it on both sides too. I hope that is what it is for you. It sucks but it's not so scary once you know what it is.

I am sure everything is fine, and now that you are 12 weeks, the chance of miscarriage drops to less than 1%....I agree with the rest of the ladies, It is probably the baby growing, I remember at weeks 9 and 15 I had severe cramps and I was worried but the baby is fine it was just everything streching out making room for the baby, you should only worry is if you see bright red blood associated with cramps, if there isn't bright red blood, I wouldn't stress about it ( easier said than done right?).....I pray that we all have successful pregnancies and healthy babies xoxox...Keep us updated