Pregnant with tingly hands?

I’m 22wks pregnant and for the last couple of weeks I’ve noticed my hand/arm will go all tingly and at times slightly numb. It’s only 3 times a week I believe(I haven’t been counting but an average) I’m not sure if anyone else gets that while being pregnant? It’s only one hand/arm at a time,never both. Sometimes it’s just the hand and sometimes it’s the arm up to my elbow. It doesn’t happen when I do anything specific, it’s more so out of nowhere from what I’ve noticed. I’m not sure if I should call my OB or if it can wait until my next appointment in 2 weeks.