Pain on right side, what do you think?

Laurisa • http://laurisabonk.myitworks.com
For the last week or two I've had some achy, crampy type pain on the right side. It's on the edge of my uterus at about belly button height or so. Does round ligament pain hurt that high up or is it usually lower? Usually it's just kind of more annoying when I feel it but these last few nights I've been woken up from sharp pain. Last night when it woke me up I felt my stomach and it's like the baby was all balled up on the right side (attached picture) so I don't know if it's pressing on something or what it's doing. 
I'm going to call my doctor tomorrow and go talk to her to make sure it's not a hernia or something else but just curious if anyone else has experienced something similar? 
I'm 18 weeks.