Hello and welcome to Healthcare Magic. Thanks for your query.
10mg of Nortryptilline is a very minimal dose and is unlikely to be causing any prominent side effects. Mercilion, however, is a hormonal
pill and can cause side effects such as hot flushes.
So there could be a few possibilities for your hot flushes:
1) Side effect of Mercilon
2) The menstrual problems and PCOS
could be indicative of a hormonal imbalance, which itself can cuase such hot flushes
If your symptoms are frequent and distressing, then I would advise you to review with your doctor for a detailed evaluation and further management of this problem.
Wish you all the best.
Dr. Jonas Sundarakumar