I get those too. I usually get it because I'm walking too fast or overworking myself. Sometimes it's just your body letting you know to rest or slow things down.
How long does it last and how frequently?
Sharp pain can be caused by Braxton hicks, even on one side. But it's worth monitoring to be sure if they're real contractions or not.
I wouldn't call it normal, if ur worried call your doctor. I sometimes get cramps and twinges mostly from baby moving.