Awesome I found another 15wkr, I also am 15w3ds today and im just at my belly btn but this is my third pregnancy. Im sure your were you should be. Let me know how your apt goes, mine is Tuesday.... Go June Babies
I don't think that's true for everyone though. I'm 14 weeks and the top of my uterus is already at my belly button...it's actually starting to flatten my belly button out a little. I'm surprised at how fast I'm showing, given that this is my first pregnancy, but I think it does vary a lot. I'm sure the baby is fine though, aches and pains are a part of this, as long as you're not seriously cramping and bleeding I wouldn't worry too much. :)
I'm 20 weeks at its right at my belly button. If I push on my stomach, I can feel the hard spot where my uterus stops. Yours should be approx 2 inches below your belly button.
Your uterus should be a bit over your pubic bone. At 20 weeks it comes on par with your belly button.