Round ligament pain?

snookums2013

I think I've felt a few of these in the past - usually on the side.  This morning when I got up off the couch, I had a pretty severe stabbing pain that felt like it was across my whole lower stomach.  It just lasted a few seconds and then went away.  Then again a few mins ago when I got up I felt another one that was kind of in the center.   It also went away after a few secs.  I've been trying to still wear my regular pants most days and they are somewhat digging into my stomach/ putting pressure on it.  Could that be contributing?  Does it sound like these are RLPs or something else?  At my last appt, the nurse said her RLPs were worse than her actual contractions so that gives me a little bit of comfort.  Thanks!