Rant warning!! TWW crazy....

I'm tired of waiting!! TTC should be a no brainer, fertile days + BD = baby... Right?... WRONG! Here I am TTC for months when my friend (single friend) decided to have unprotected sex ONE day and got pregnant... What kind of sick joke is this!?! All the money I've spend on opk's, pre seed lube and hpt's, plus all the tears, daily charting, moving schedules to be with my DH on ovulation day, the TWW... UGH!! Really!?! I can't... I'm 9 dpo right now, seriously thinking on being the last time I try, I feel horrible today... Is just too much :'(