Sorry in advance for the long boring post!

I'll be 37 weeks tomorrow and today has been a weird one. My husband and I started our day at 7 am. At 7:30 we decided to be a little frisky with each other. We did a little foreplay and he got me off using my vibrator. Afterwards we still proceeded to have complete intercourse. Everything was going great and the sex was great. I realized I was gonna have another orgasm. He then stopped and asked if I had "squirted" on him (which I've never done in my life). After sex I noticed it hurt to walk more from pressure not the sex. It felt like my son had dropped in a matter of minutes. We continued on with our morning and showered and both got ready for work. I was already having some light contractions but knew they were common after sex. At about 9:40 I sat down and was doing my normal routine of watching the kiddos I take care of. Then the painful contractions started. I started getting them very quickly. I timed and they were every 5 minutes. So I called my husband and the kiddos parents. We headed to the hospital. They monitored me for about an hour. When I got to the hospital my contractions were every 3 1/2 minutes. Theh checked my cervix and I wasnt dilated but barely. The nurse said she could stick the tip of her finger in but no more than that. And when she pulled out there was quite a bit of blood. That was about 11:00-11:30. Its now 7:30 and I'm still bleeding pretty decently. They sent me home and to get a prescription for a bladder/uti. They said there was some stuff in my urine that suggested I was getting one. I'm still having contractions and bleeding. Just wondering if this has happened to anybody else??