I have that all the time and in the morning too , it's because the baby is taking up all the space. Im 37 weeks
Well I'm. 35 weeks and I figure it's because my bladder is emptying itself and therefor the baby is lowering in my abdomen due to the increased amount of space . So it's normal it he cramping is just your baby laying lower down due to your bladder being emptied .
I've got this right now and it's been going on for 3 weeks I'm 39 weeks and after I pee it gives me the worst cramps i have no idea why I know it's not an infection because I've seen my midwife last week and she would of picked it up