Help!!! I dont know if i am…

Ok, I have had plenty of scares.. but this time is probably the scariest… well last month i had a light period (i guess) on the wrong week and it only last for like 2 and half days… I usually start at the end or beginning of the month… now i still havent started this months.. and i have been sleeping way more than usual, im have more discharge then normal, and im breaking out under my chin, some on my shoulders and back.. I usually dont break out…Oh, and Im gaining weight quick style… I eat normally… Please whats wrong with me…