Help!

My partner . Has hit me with a serious ultimatum . Hes an ceo of an janitorial service and hes make pretty decent money . I am a stay at home mom . We recently found out that im 7 weeks pregnant and I'm stressing out big bc I want a independent income for myself and the kids . I dont wanna depend on him to solely take care of me and the kids financially so I told him I'm gonna start looking for extra work . He told me I was dumb for stressing out about that stuff and threatened to legally take our 2 year old and the unborn child away from me if I didnt follow his lead with his business! . Ladies .. I DO NOT WANT TO BE A JANITOR! I'm sorry but no! . I dont wanna clean nasty bathrooms all day for 35 bucks a day ... no ma'am! What do I do ?