Jealousy

I'm so upset and jealous. I found out that my sister in law is pregnant. It took her 4 months and has taken me a year and half. I didn't realize how upset I was till last night I cried my eyes out and I am also a little angry with my husband. I just don't want to be around him and he's always wanting sex now. I think I have just completely given up tht now I refuse to have sex and deleted some of my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period apps</a>. I've been to doctors and seen different ones to get different Opinions and they tell me all different things I'm loosing all hope. Is there someone who can talk to me and keep me from loosing hope but gaining more faith. I hate that my relationship and life has affected me this way. I really want a baby and I don't want to adopt  nor does my husband.