I am 8 weeks pregnant, and stopped taking my Celexa 40mg. I'm in hell, what do I do?

Should I start taking my Celexa again or no. I am 8 weeks pregnant, I have a 2 year old and 1 year old at home, so I can't continue living like this. I feel angry, depressed and really for no reason. I am scared to take anti-depressants due to the risk of birth defects while pregnant. Please help.