Super weird

Been cramping since last day of my period, super moody, appetite increase, back pain, constant headaches, gained 5 lbs within the last week, had a tanish color discharge for one day, basically been having all the period symptoms since I got off my period last month I'm not due until another 2 weeks the 20th to be exact I'm not sure if I am pregnant or if something is seriously wrong with me any help would be fine