Migraines a symptom?

Sooo, I am very irregular, I wasn’t ovulating when I happened to get my period, this cycle I tried a fertility tea, when my period started on the 17th of March. This time I did ovulate.

2 weeks ago I started feeling migraines. They got worse a few days ago. Doctor prescribed medicine.

I was reading on what could cause them. Hormonal changes and stress, among other causes. Could it be possible to have migraines as a symptom of pregnancy? I’ve been nauseous. But my tests keep showing negative. Do you think it might still be early to test? Or it might be because of the tea that it helped with my ovulation?