Need your thoughts...AF or implantation??

So I am still trying to get my facts straight. My boyfriend and I just started TTC last month. AF ended 6/22 and we started on 6/29 and again on 7/12. I have been bloated pretty much ever since 6/29 and a week ago started getting on and off nausea, some dizziness, tired and on and off cramps. Last night my nipples felt slightly tingly and then stopped and I had some cramping. Today I had cramping like I would get for AF. Had light pink slight discharge when I wipened once, then a light brown and slight pink discharge. Thought AF was coming to join but it's only when I wipe. On this app, AF was due today and on another was due yesterday. Usually she comes on heavy right away. I did test tonight out of curiosity but it was neg. Sorry this is long, but I don't know what to think?!?!