So Confused!

Okay so I'm on day 27 and my cycles are always 26 days.  I started getting cramps and such like 3 dpo.  The last 3 months I've barely had cramps but this time, they just feel like pregnancy cramps so this whole time, for 10 days, I was positive I was pregnant.  The anticipation is a killer it really is.  Also, I tried 2 things different this month; I started taking Geritol Complete which I heard has a baby in every bottle, so why not right?  Also, we did it every other day starting on day 10 instead of every day.  So I was really excited this month.  Well, I tested on day 25, 26 and this morning, day 27 and all have been BFN but no AF yet and my temps are still up.  I'm starting to think that I'm really stressing myself out and that this is causing AF to be late.  If I were preggers, I'd for sure have a positive by now.  When AF finally comes, it's going to hit me hard again I know. It seems to get harder every month every time it comes.  I hate this!  I keep telling myself not to put all this stress on myself and that it's not good for my body but it just seems to be getting worse and I don't know how to stop.  I told my bf that next month there'd be no temp taking, no charting, no opk's and no counting but I know I can't do it!  Uhhhhh!