Round ligament pain is, in my opinion, one of the deep secrets of pregnancy that nobody ever warns you about. All the books talked about it as this mild annoyance. They never said that it actually really HURTS.
I wouldn't have thought it could happen so early, but I guess it does since it's happening to me to. Mostly at this point it's when I sneeze-- the pain "catches" suddenly on one side of my groin or the other. I didn't have it until well into the 2nd trimester with DD, but here it is.
Round ligament pain is that sharp pain, but it can also be a dull ache, especially after you've been on your feet all day.
A warm bath is the only thing that ever helped it for me. The water takes the weight of the uterus off those poor ligaments and lets them rest a little. Swimming's even better, actually.
me , he , my three , , and -- and the one we lost