I'm So Done!

I'm fed up, My SO an I have been trying for a year now... 12 Freaking months! Using Vitex, prenatals, and other non-Medical aids... I've tracked my period amd ovulation so many times... and no doctor or fertility clinic will help us because as far as they can see... there's nothing that should be causing me to be having so much trouble! I've had 2 pregnancys, 1 Chemical a couple months or so ago and 1 Miscarriage back in march that was my fault :/ I feel so bad and just want to give up all together! All my friends are either pregnant or just had a baby and it angers me so much because half of them didnt even want them and still got a baby! Why is fate so cruel??