husband and I aren't talking - please help!

It's a really long, annoying story so I'll try and cut it down. Have been married for 1.5 years with my husband for 9 years. We have split before (approx 4 years ago) because I thought he was being inappropriate with a new friend (girl) and he basically made me feel like crap for thinking anything. He was always texting her, when we had an argument he actually went round hers just to 'watch a film and relax', buggering off on our days off together to 'catch up' with her. I'd basically had enough of being 2nd best. Anyway, we broke up and got back together a couple of months later (sometimes now, I wish we hadn't) and now I feel like it's happening all over again! He's got a new job, and there's this girl he really gets on with, talks about her a lot, texts, he's barely off his phone and I haven't seen his phone leave his side in the last 4wreks or so. I also found out he'd deleted some messages from her - he claims it's because he didn't want me to be annoyed that they were texting and it was nothing innaprpriate. confronted him about it and said I really don't feel comfortable with it and we've barely spoken in the last couple of days - had a massive row yesterday. He doesn't want to talk about it and constantly makes me feel crap for having these worries. I don't know what to do, I feel like crap all of the time. I hate coming home and feel sick constantly and today I had to leave work for feeling so awful, dizzy and sick which I'm sure is stress. To top it off supposed to start <a href="https://glowing.com/glow-fertility-program">IVF</a> in march, I want a baby so much. Help, please. What shall I do? Am I being unreasonable? X
UPDATE FOR YOU ALL.
I walked out on my husband yesterday after more arguing and him being even more secretive as to where he was going and who he was talking to. He told me I was being unreasonable to be so annoyed about him deleting pics and videos from a girl and when I found out he had downloaded tinder I was the one in the wrong. Feeling pretty crap right now, was supposed to be having <a href="https://glowing.com/glow-fertility-program">IVF</a> with this man. Only been married 1.5 years, feel like such an idiot.😞