Yes it is normal :( your uterus is growing and putting pressure everywhere as organs, tissue, fat, muscle are rearranging in your abdomen. I asked a similar question on here when I was about 18 weeks and followed up with my doctor. I got the same answer that I just gave you.
The good news is that it does get a little better until you start feeling the major pressure in your pelvic region.
at 1:44 PM on Dec. 16, 2008