Depressed, problems with marriage, help!

So I'm posting this here because I feel so alone and I don't have anyone else to talk to. My husband and I have been TTC for a month now, so I weaned off of my lexapro (10 mg). I hadn't really experienced any symptoms except that my emotions had become a little more sensitive and I'm having to keep myself in check. My sister in law is in town for my nephews birthday party on Saturday. It was after the party that my husband was at my MIL's house with my SIL and they had a whole conversation about how I had an attitude the whole time. (Keep in mind that sitting around picking people apart is one of their favorite past times) So my husband came home and didn't say anything about it on Saturday night, but yesterday morning when I woke up nauseated and sick to my stomach, he went off on me saying that I'm ridiculous, and that he doesn't believe that I'm sick and that his mom and sister were right and I'm a horribly rude person and nobody likes me. This completely took my by surprise because I've never been rude to his family and I've always tried to give 100% to them because I want them to like me. So anyway, after 20 minutes of me asking him what I'd done at the party that made everyone so upset (because I honestly acted like my normal self), he couldn't give me an answer and I started to break down, like ugly cry, beak down. Then he went on to tell me that if I cant straighten up than I had to leave. He made me pack my bags and told me to leave and not come back until my attitude changes. I'm just so confused and depressed now. Apparently the family I married into has some kind of problem with me, but nobody will tell me what it is. I've cried for 24 hours, broken out in hives, and my husband refuses to apologize. He has never taken my side or stood up for me. I'm so lonely because I don't have anyone I can talk to. My heart is broken because I don't know what I did to cause him to be so angry with me, I just don't know what to do anymore.