PCOS and Endometriosis 💔

Does anyone have any advice for me. I have stage 3 or 4 endometriosis and PCOS, and was recently diagnosed with an 7cm endometrioma. Me and my husband have been trying to have a baby for a year and a half with no luck. Does anyone know anything that might boost my fertility? Every OBGYN I have seen has tried to put me on birth control (which makes me crazy) or tries to put me in menopause. I am 21 and taking Metformin and Myo/D-Chiro Inositol.