I feel full all the time, cramps n pain look like pregnant. My period came early this month and end 3 daysn last month the same than usual. Help n why?

Irregular bleeding. There are several reasons for this. First, take a pregnancy test. If negative, changed in hormones, stds, fibroids, and several others could be problems. There are multiple treatments for each of these. I recommend you talk to your regular doctor if this problem continues.
See your doctor. If you are having persistent bloating (feeling full) and pain you should see your doctor for an evaluation and have a sonogram to evaluate your ovaries for any abnormality. Exclude pregnancy first.