Your condition makes me concerned. Nursing period is very stressful and you also don't get adequate sleep.Please try to understand that medications are there to help you and I am sure your psychiatrist
will be available, even if you face any problem after taking medication. At present what you need to do is, ask for help from your family who I think will surely help you in baby care and daily chores. You can then get adequate time to handle your health. Along with the medications, ask your psychiatrist to help you with cognitive behavioural therapy.
Hope you get well soon. Have a nice day.