Having PCOS, should I opt IVF to get pregnant?

Hi doctor,

I am 27 years old. I have PCOS and have been trying to conceive for four months. My gynecologist put me on 500 mg of Metformin thrice a day and 10 day cycle of Medroxyprogesterone at the beginning of each month to force ovulation. The medication is working exactly as it should. I get my period every month and I have lost weight with the Metformin. I went in for a follow up today and my doctor recommended that I sign up for an infertility study that she is doing. It requires hormone shots, extensive testing and in vitro fertilization every month for a period of four months. I have been going to the same gynecologist for many years and I know her pretty well.

Let me just say that she has never seemed like she puts much thought into diagnosing and treating me. I had to practically beg her to test me for PCOS even though I have had very irregular periods and other symptoms for years. Now, she jumped straight to IVF treatment. I have heard of women staying on this course of treatment much longer and being able to conceive. In vitro is incredibly expensive. I am just worried that the only reason she recommended this is because she wants another participant in her study. Your advice on this subject would be appreciated. Thank you.