Hi all , I was diagnosed with PCOS for last year(age :29). Doctor put me on MELMET-SR (Metformin 500 mg).I went for follicular study for 2 months.(NOV n DEC 2010).After that my hubby went abroad for 8 months. Till then i was continuing on metformin. I went to follicular study this november. The follicle went upto 2.8 * 2.9(with Internal Echoes) on day 18. My cycle length is 34 days. My doctor prescribed duphaston for 10 days.Then on the next cycle i went for LH test and scan (2nd day of period). LH was normal. the doctor prescribed Siphene and Gonal-F (on day 3,5 & 7), Metformin twice a day.But when i went for follicular study the endometrium was thin. She again prescribed Premarin for 3 days.There were three follicles 2.1*2.0(with Internal Echoes),1.5*1.3,1.1*1.2 on day 20.:hide: I'm very much frustrated about this. Should i change the doctor or what is the reason behind the Internal echoes.??..please suggest me a good doctor in chennai.