I need to vent

I don't know if this is the place to vent or not but I really need to. My husband and I have been ttc for a few months and haven't had any luck yet. Well I just found out a close friend of  mine is pregnant with twins. She did not want anymore kids and she was very careful on not getting pregnant and with one day they didn't use protection she got pregnant. She's not too happy and was complaining. I'm happy that she is but deep inside it hurts me and somewhat upsets me. I know I shouldn't feel this way but I do. Plus to top it of about 3 other girl friends announced they're pregnant. Bummer!