I'm so throwing in the towel for baby making...

I've been doing this now cycle after cycle for a year and half, just to be dissappinted every single time...I have the hurt of a miscarriage in December  and now I have to schedule my appointment with my obgyn for not conceiving in 6 months!! I don't understand and If I see or hear somebody else getting pregnant I swear I'm gonna scream...so selfish of me but everyone makes it look so easy!!