IB or AF? HELP!!

Ok ladies I'm new here & learning.. so here's the background on my situation:

I haven't been tracking my OD's, bbt's, CM, etc. Like most are doing on here, but if I'm not pregnant this time I'll start.. I didn't know about any of that until I joined Glow!!

Anyways, we did the BD on 9/5 (as well as a bunch of days after lol)..

My AF was supposed to come yesterday (the 13th) BUT INSTEAD, on the 11th this happened!!

I'm thinking it's IB.. y'all please tell me? Answer the poll or feel free to ask me any questions.

Btw.. YES I HAVE been having some symptoms, but also I know this sounds weird, but I FEEL pregnant!!

Also I'm extremely bloated.. so much that I LOOK pregnant. & that's not normal for me!! Help please?