Weight gain and hair loss. Hair problem.

Hello In past 1 year of lockdown. I have gain 18 kgs of weight. I am just 22 years old and do workout on regular basis. In the month of May 2021. I had to deal with mild covid for almost a month and in which I almost gain 4 kgs. I have take thyroid test which came normal. I took a blood sugar test that fasting one which came normal too. Even the pcos hormonal test was taken and the hormone are normal again. I was told to take the pelvic scan which showed that I have cysts in my ovaries. My periods come in 30 to 40 days max and they come every month. I had been losing my hair a lot... It is more than 200 strands at a time. I take no medicine for pcos or pco. I was told to lose weight which very very difficult. I was told to go to endocrinologist. Which I will be going next month. I would like to know .. what should I do and what all the test I should take for my weight problem and hair problem. Thank you.