I have seen negative tests that turned out to be a positive preggo, and have seen those pee in a cup, and find out what sex the baby is turn out wrong when the ultrasound says nope, its the other sex.
Please make an appointment for a blood pregnancy test. They are quick, and get results pretty easy. it would relieve your mind, and give you a direct answer about what to do on your meds.
If it was me? I wouldnt take my med till i had proof one way or the other of what it is, or isnt. but thats me.
Nice to see you again.