I am so frustrated!

So Monday morning, I weighed 244.4 and was so excited! Then I stepped on the scale Wednesday and was up to 248, now I am 251. UGH! I am hoping that AF is on the way. I haven't been doing anything differently. No outrageous straying from my meal plan, I've been eating the same things I always do. I'm going to the gym, getting in my workouts and still, I gain. It had better be PMS related. I am really irritable right now so I am guessing that's whats up. It's very discouraging though. :(