Talk to Gynecologist on Period Painproblem

Salam.. Mere periods 12 age mai start hue thy. 4 saaal no pain in periods or hamehsa se ab tk har mahine aye hain . Not even single month miss hue. First 4 years no pain phir 16 ki age se ly kr 18 age tk sharp pain hota tha fever tk hojata thaa vomiting bht buri halat phir do saal ik dumse 18 19 mai ik dumse pains shoro hogyi abdominal pains. Ab tk hoti hain asa kyu? Kya ye q serious lene wali bat hy? Pls tell me mai bht pareshan hon i cant even walk.