Period question

megan
Hello ladies. Serious question time. About a month ago i was "on my period" but i barely bled then this month i bled a little for about 5 days. Now normally my periods are irregular and im severely heavy like doubling up on my tamps and pads heavy. My boyfriend and i have had unprotected sex. Ive been super emotional, had heart burn and am tired all the time. Im not nauseaous or anything like that and I took a pregnancy test a month ago after that 1st weird period. I also always feel bloated and have gained weight despite eating less or healthier... should i be concerned and take another test? Could something else be wrong with me? Please help.