Excessive hair fall for past 2 weeks.

I have been diagnosed with pcod and have been in diet for last 2 months to lose weight, and already i managed to lose 5 kg weight with orlistat capsule 120mg per day as prescribed by my gynae because i was overweight and was going towards grade 1 obesity. Now i am 70kg and height is 159cm. And i also dont take any medication of pcod because my gynae told me not to take any hormone pills now,( previously i used to take but now as i am having normal periods without any medication she told me to stop those and strictly follow diet) . But from last few days i am having tremendous hair loss , when i am shampooing, upto 150 170 hairs are coming out of my scalp. My scalp tends to get greasy fast and in summers i sweat a lot and scalp becomes itchy.I have little curly wavy texture of hair. Please guide me what to do!😭 I am in tremendous tension.