Pretty sure I'm down & out!

So this last month, I tried everything. I was tracking my bbt which has now dropped this morning from my highest ever two days ago. I used opk's to confirm ovulation & bd'd with hubby non stop along with putting up my legs for 10 minutes after. I was tracking my cm which has been all over the place. I just feel shitty & I'm disappointed that I'm not pregnant yet after two years! I feel like giving up. Maybe next month I'll just stop trying & maybe then it'll happen because that is how it happens to everyone, right? Boo! What do I do? I've been tests for the last three days with FMU & all bfn's ? feel like balling my eyes out for days!