Hair loss. Medicine? what should i do?

I have been having severe hair loss since 3 years. My hair has reduced to half. I was diagnosed by a doc on practo as talogen effluvium. But i recently got a test done and i don't have low level of hemoglobin/ vitamin d or iron or b12. In fact my report was pretty normal. I can post the exact count of all these vitamins if need be. So my concern is, should i really continue with the same medicine? I am taking follihair everyday and applying grocapix serum and growth stimulation shampoo suggested by the doc. I'm still in my first month of treatment. What should i do? I'm scared this treatment may not work for me. Btw i also have pcod but the doc looking say my hair said this may not be because of pcod. And i don't have any thyroid issues.