Pregnancy with anti depressent medicine.

Hello Doctors, My Wife, Age 27 year undergoing OCD treatment since our marriage about last 3.5 years. She was taking SERTALINE .We are not planning for baby for this medication, thought once medication stops or reduced we will plan for a child. We talk to doctor about our planning and doctors also gradually reducing dose of medicine but in 3.5 years I do not any satisfactory result of medicine. In the mean time I change my job and move to new city. We approach a new Doctor, we explain all things to doctor, Doctors advice’s to postpone our child planning for few months, and doctor wants result and wants to change medicine, Prescribed FLUNIL 40, CLONIL 25, ROSPITRIL 0.5. Last 20 days she was taking this medicine. Now Problem is she missed her period and we check for pregnancy and found positive. Consult Gynecologist, and Gynecologist said it has been 34 days she pregnant. Please suggest what to do now, Should we continue pregnancy? Or abort it and continue medication?