Hi, I'm 23 weeks and 1 day pregnant. I keep feeling some discomfort at the bottom of my stomach, sometimes only when I move in certain positions, but it's been for a few days now. I would say it's on and off... is this normal? I wouldn't go as far as to say it's pain, more discomfort as said above... I have thought about calling the midwife but I've done it a few times for various things and I don't want to bother them too much! First time mum here and panicking about everything! 
thanks!