Dull aching cramps lower pelvis

Sarah

Three weeks ago I had sharp shooting pains that turned out to be contractions. Went to the hospital and took a day off then they subsided. I have lots of extra fluid so I have NST's twice a week. Last week they picked to contractions but I barely felt them. They also made me get an ultrasound and everything looked good, baby is head down said think nothing of it. 35 weeks today and feeling dull aching pains in lower abdomen similar to period cramps all day. Anyone have this? I don't want to go to the hospital for them to send me home to drink water once again, and I have been drinking water all day, pee is clear all that good stuff. Can't afford to use sick days prior to maternity leave since I need every last one to be with my baby.