I feel pregnant but i am having a period

My period has been very light and a few days short for about 4 months..It has also been coming very early. I have unprotected sex every time.my belly is growing and getting harder and sometimes I swear I feel and see movement.. like almost everyday. No one believes that I am pregnant but I have a very strong feeling that I am ..Any opinions or advice or experience with this type of thing plz comment