false alarm

Brooklyn
First off, I'm 32 weeks! So my husband and I had sex yesterday and not too long after intercourse, I started noticing like a cramping but I kinda ignored it. I went to the bathroom about an hour later and I was bleeding! So of course, I'm panicking and not sure what it is. I called the OB and they had me go in and get an exam and be put on monitors. I was having contractions but was not dilated and was completely fine so they sent me home. I was so terrified and now since then, I've been having contractions and my hips are killing me. Anyone else have something like this happen?