Totally confused and ready to give up.

I'm 6 days late with a usual cycle of 29 days, I'm 27 and have been ttc #2 for almost 10 months with no luck! So since my periods been late it's all I can think of, I took a test Friday and today Monday and both were BFN.. What the heck is going on?! Does any one have any idea about what's going on.. Maybe it's still to early to get a positive? Help!