I'm 29 years old and have been TTC for about a year now .I was diagnosed with mild PCO last year but after a 12 kg weight loss, I have regular periods for the last 9 months. I have been tracking ovulation using OPK kits and have seen a
LH surge every cycle for the last 5-6 cycles. Husband's semen analysis is normal. Last cycle we tested for Day 2
FSH was 6.5 and LH was 5.3, day 21 progesterone was 17. I was prescribed letroz 5mg every night for this cycle. Took HCG injection on day 13. On Day 15, follicle ruptured. Follocle size on day 13 was 2.4*2.3 and ET two layer 8.5mm.
Why was i given this course of treatment- i have been ovulating naturally as well?