No period??

Logan

So, I had my second 8 months ago almost. Periods started getting regular. I have also had health issues like hypertension and all. January my period was 7 days late and lasted 3 days. No period since than. I recently just found out I had hyperthyroidism. Waiting for my labs with my doctor. I gave an app with a OB next Tuesday. My test are negative. I’m sure it’s just my thyroids as I am in medical school so I know just a little at the moment. I am just on medication for my hypertension that I wouldn’t be able to take if there was even a chance of pregnancy. Anyone else ever have this problem? The OB already told me they were doing a blood test.