Thanks for writing to DoctorSpring.com with your health concern.
Oxandrolone gets eliminated from the body within a day or two.
You have quit 4 months ago.
And you are four weeks pregnant.
There is no way that the past usage would affect your baby.
Only intake of oxandrolone during pregnancy, particularly the first trimester, results in adverse developmental effects on the baby.
Please stop worrying.
Hope you are taking regular folic acid supplements though.
All the best. Please feel free to get back with any queries.