Is this normal?

Hannah
About two months ago my period was super late , about 3 weeks ( I had taken a test it said negative ) 
But when it did start I had such bad pain , even when I had to use the bathroom it killed me. I usually use tampons but anytime I wore and wear one now it's like my pain is doubled , no matter what size I use. It's recently like this again and it's hurting so bad.