round ligament pain?

I'm 27 weeks and for the last few days i've been having some lower back pain on and off, mainly when i get up or sit down. i'm only a small frame and have this big belly so i'm figuring it's the extra weight i'm carrying out front,
but i've also had a sharp, stabbing like pain down near where i think my ovaries are. i had it once for a couple of seconds on the left side two days ago, and i had it twice for a couple of seconds on the right side yesterday and then when i rolled over this morning i had it again on the right side (it took a little longer to go away). it's very painful but fortunately only lasts a few seconds, does this sounds like round ligament pain.
i'm on holidays for another week, 6 hours away from my normal gp so i can't ask. if i get it again i'll go and see a gp down here, but was just wondering if anyone else has experienced this to put my mind at ease.