9 days before my expected AF

I had unprotected sex (August 20 cycle day 16). I want to say I assume that I ovulated (I had very slippery cervical mucous and this was the day I had an annual check up at my OB/Gyn and it smelled sweet) on cycle day 14 (August 18) out of my 24 day cycle. I usually get my period every 24th day right on the nose. Well today makes it cycle day 25 and as of so far I still have no period. No cramps, or anything lately like I usually have right before my period . I mean I feel perfectly fine! Last month I had cramps leading up to the days of my expected AF and the morning it came they grew INTENSE AND VERY PAINFUL (always have been since I have a heavy flow as usual). Only difference I noticed this time around is that I love my boobs massaged , my nipples itch, I'm getting mild acne (could be from not washing all the make up off my face and missing spots ) , and I have to pee A LOT. What do you ladies think? Am I pregnant ?