Please stop taking medroxyprogesterone immediately. While finding out you took this medication can be worrying, short-term exposure during very early pregnancy generally carries a low risk of causing harm to your baby. Your immediate next step is to contact your OB/GYN or healthcare provider. Because you are experiencing upper abdominal pain along with a positive pregnancy test, a doctor needs to evaluate you promptly. They will likely perform an ultrasound and blood tests to confirm a healthy pregnancy and investigate the cause of your pain. Do not worry excessively, but seek professional medical evaluation as soon as possible to ensure your safety and peace of mind.