Its just not working...

I have been feeling quite depressed lately and i know i shouldn't... i stopped the pill last June, and I somehow magically thought id get pregnant right away. Well here we are nearly a year later and still nothing. I know people have been trying for longer then us, hence why i don't think i should feel this way. But im having such a hard time. My cycle is all over the place. Lately I've been having such bad cramps for like a week before i get my period, having brownish secretion for 2 days and then getting my period at least 1 day late then predicted. I just dont get it. Its so frustrating.