HELP! Duphaston/Letrozol to bring on period/ovulate

Hi ladies, I am feeling very lost at the moment. Hubby and I are trying to concieve for first time owever as my periods have always been irregular (more so since going off the pill) I went to see Dr Koster at HealthBay Clinic. As predicted, she diagnosed PCOS and low progesterone levels hence why not ovulating. She did a myriad of tests (coming to an overwhelming 2500 dhs after being advised the consult was only 400dhs) and prescribed Duphaston (2 pills twice daily for 10 days) to bring on my period and then on cycle day 3 start taking letrozole (like clomid) for 5 days to help me ovulate. Then lots of s*x then Duphaston from day 16 of cycle again. The Preg tests.

On day 3 of period cycle I am supposed to go in for some blood tests to check hormone levels etc. I am just a bit confused - the directions seemed simple but I guess my mind is overwhelmed and I am a little freaked out about putting foreign things in my body, especially as I am prone to depression and weight gain, 2 things that these pills can bring on and I have worked so hard to fight these things in my life.

I am probably worried about nothing but I am not an expert on these things like many of the ladies in there on their repeat fertility treatment visits - and despite giving me her mobile number I cannot get a hold of the doctor! I only starting taking the Duphaston yesterday however I have had some light brown spotting/bleeding. I was instructed to make appointment to get blood tests on day 3 of the period cycle however I dont know if this is my period starting or if just spotting due to being on progesterone hormone pill!! I dont want to miss my day 3 tests if this is my period, but I dont want to go early if its not and waste those thousands of dollars spent already!!!!!

I did manage to speak to a nurse and she said wait until later today to see if it got heavier and if it did, call for appointment on Sat or Sun. But I heard also somewhere that generally you take the Duphaston for 10 days and then when finished the period will start within 3-5 days. Can anyone tell me what their experienced have been just so I can have piece of mind until the doctor actually calls me back? Any side effects too? The doctor was good I thought however I would have appreciated more information on the tests and treatments as now I dont feel I have the support I deserve after paying that much for tests.

Appreciate any experiences you ladies TTC have had on these pills. Thank you