There are medications you can take while pregnant/nursing. I took an anti-depressant after my babies were born. They didn't work for me. I nursed my last until 14 months, and starting on meds that I couldn't take prior. It's been about 4 months now and I am not "normal" yet. I felt a lot of guilt over stopping nursing, but I strongly believe I needed to go on medication that was stronger, and also that nursing helped with the depression. Don't know which I believe more. I miss nursing greatly. It's a battle. Talk to your doctor, get help before you make any decisions. Congrats on embarking on this wonderful journey!