Pregnant and worried about money, just left uni!?

I am 23 (nearly 24) and have just finished uni, my fiance work full time and is on 24,000. We are about to buy our first house and move to Devon, and i have just found out i am pregnant. We are both very happy but i am very worried abou the money as i wont get a full time job if pregnant so will have to temp, but have bank depts to clear, would i get maternity benifits if i was a temp? I am 5 wks pregnant. HELP!!!!!!! I am really stressed about money and that i wont be able to get a job now i have finished uni before the baby is born!