Cramps need prescription pain meds, not OTC

Cramps are the worst. I've had my period since I was 10 1/2 (I'm 33 now), it has always been what I consider heavy with clots. I twisted my right knee when I was 19 and ever since then I know I will start my period in the next several days because I have burning pain right below and along the right side of that knee. I took the pill for about 2 years, it did nothing for the cramps and my cycle is exactly 28 days unless I'm super stressed out, then it can be 40 days. OTC pain killers don't work, I have to take 5 advil every 4 hours, not uncommon for me to have taken 14 in 24 hours. I have had surgery twice this year so I have leftover 500mg hydrocodone w/ apap. 2 of those actually work for about 4 to 6 hours or longer depending on my pain level. I actually had less pain from major surgery than from cramps.Bloating isn't much of an issue, retain about 2-3lbs. Birth control gave me a migraine every day and caused weight gain even though I worked out every day. I lost 10lbs by going off the pill and only have a migraine at the beginning and the end of my period. I've been more emotional with the past few cycles, but that has more to do with other health problems going on the past several months.