ANYone have advice?

So as most of you know, my fiancé & I are ttc. Been trying since may! Well, my periods have been 24-26 days apart since March, and now I'm late. I took a test 2 days after I was late, and it was negative. haven't tested since. I was due for AF on the 26th. Now, no sign. just cramping, so I've been waiting not getting my hopes up, and she hasn't showed. I have a bunch of clear/white discharge that it's so much it feels like I started(tmi). p.s. got a positive opk on the 12th! Could it be I'm pregnant? I'm testing again on Monday if she hasn't showed, but I just don't know because I've never had this. normally when I'm late, I start like 2-4 days later. & now she isn't making an appearance.