Please help my constant crying

So this is my first pregnancy. It's still super early, I'm only about 4 weeks along. But I feel like I'm going crazy.

Normal symptoms I understand: burping, dizziness, frequent urination, I've got it all. I'm also getting over a cold and a UTI, and i just quit smoking but again, that's fine.

I'm so emotional, I'm driving myself insane. I cried on the 20 minute drive to work today. Because the day before was slow. I cried while watching Supernatural, because the background music was pretty. I cried yesterday because i hadnt cried yet that day and was afraid i was going to start crying at work. This is getting out of hand.

I also have severe depression and anxiety. I went off my depression meds because I don't want to do anything to jeopardize this pregnancy. But I had another anxiety attack while trying to fall asleep. I was writhing and pulled my husband's thumb backwards by accident. That made me start to cry. He kept saying it was fine but once it started, I couldn't stop. I started thinking, if I can't control this now, what will happen when this hits and I'm home alone with the baby? How can I be a good parent to my child if I can't take care of myself. My husband asked what was wrong but I wouldn't tell him due to embarrassment so he got pissed off and said, fine, goodnight then. I finally left the room. I dont think its hit him that we are pregnant, and that my symptoms are exaggerated, and i would give anything just to go to bed like a normal person and actually sleep through the night. Its been another 30 minutes and I'm still crying.

Please help me get this under control, I'm desperate. I can't live like this for 8 more months.