Needing a little bit of advice..

So my glow mommy's I don't know if I'm just overreacting but, about a month ago I went to the ER because I had alot of pressure and alot of cramping down below. I was monitored for about 3 hours, they thought I just had an UTI which might have been causing the cramping (my urine came back fine)but they also told me I was having contractions and they weren't consistent so they couldn't do nothing. They just sent me home and told me to come back if I had bloody discharge or if my water broke. I am now 35 weeks and the pain had just gotten worse. Has this ever happened to anyone else? Maybe a little insight from other moms would put me at ease.