Long Rant

I am currently 27 weeks and 6 days pregnant. I have a 4 year old daughter with my husband, Josh. We've been together for 8 years. So I'm going to start at the beginning. I'm a nurse and Josh was working at a local restaurant and the movie theater. The last time we had sex, I was 21 weeks pregnant. We hadn't had sex before that in 4 or 5 weeks. 2 days later, I started bleeding. At my 22 week ultrasound, they said I had low-lying placenta and put me on pelvic rest. About 3 weeks ago, my husband started showing symptoms of a STI. He had burning with urination and had white discharge from his penis. He had rubbed in my face that girls were hitting on him at work and he was coming home later and later. He became distant. All the signs pointed to his was cheating on me. So I asked him if he was and I made him go to the doctor. The Dr. tested him for STIs, which I knew they would. Josh became more distant at this point. We finally got the results back on Monday, and they were negative. I was relieved. I told him that I was sorry that I was suspicious. Josh continued to have odd behavior. So we started fighting. I am constantly crying, trying to get him to open up to me and tell me what's wrong. On Tues after work, I went to OB and I was having contractions, my cervix is closed though. They put me on bedrest until Monday. So the past 2 days, I've been trying to work things out with my husband, show him I love him. He refused to speak to me. He would do what I asked since I was on bedrest, but he wouldn't check on me or act concerned about me. So today, I confront him about it again. And he admitted that I hurt him when I suspected he was cheating, and he cannot forgive me for it. He's not sure if he wants to be with me or if he even still loves me. He packed his stuff and said he's going to stay somewhere else until Monday. I don't know what to do. I just feel like something is still not right and there's more to this than what he said. Some advice and outside opinions would be much appreciated.

Update!!

So on Tuesday, my daughter asked me to contact my husband to see if he would come to gymnastics. He did. And we got into it while we were there. He stormed out, not saying goodbye to our daughter. I just asked him what his plans were and what I should tell our kid. So later that night, I withdrew all money from the account and text him to tell him his cat was on the porch, ready to be picked up. He called me apologetic and saying he wanted to work this out. Showed up at my house at midnight. I have just been biding my time waiting for the phone records. Which of received today. Turns out, he has been texting someone. She's 10 years younger than him, and apparently one of his supervisors. They have been texting at all hours, for hours at a time. So I confronted both of them. They both said it's just a friendship and said he confided in her about our marriage. She just graduated high school, so what she knows about marriage or having a family, I have no idea. She was extremely bitchy to me. He's been feeding her lies that I slap him and force him to take medication. This is not true. I told her that this supervisor/subordinate relationship is extremely inappropriate and unprofessional. I told him the same thing and said how inappropriate it is for him to be friends with her in the first place. They both stated that nothing happened. I don't know what to believe. It turns out I was right, there was something that he was trying to hide and he tried to make it out to be that I'm crazy and just suspecting things.