Curious..

This is new to me.. I haven't gone to the doctors yet to get check. It's been going on for 2 months now.. I have had very painful, and very heavy period flow n I would have my period twice a month... Both times really heavy to the point I'm changing every 5 min... N I would have really bad cramps in my lower abdomen n sharp pains from my lower back shooting up towards my neck n shoulders... My normal cycle is 5-6 days normal flow n bearable cramps... But lately most of the times the cramps n back pain is unbearable ... Is this normal to have your period twice a month a week long each... Please I'm just curious n not sure if I should be really worried or if this is just a phase n it'll past...