any pains when baby was dropping?

For the last 24 hours I've had an occasional sharp pain at the bottom of my stomach maybe 12 times altogether. no specific pattern or anything. it happens if i'm laying down and switch sides, if i get up to walk, during walking, it doesn't seem to matter. I'm 35 weeks right now and i'm wondering if it could be lig pain from baby lightening..? only thing that seems to not cause it is if I stay sitting down. Any one else have a feeling like that?