Collagen - to try or not to try?

I have severe osteoarthritis in my right hip and currently manage my pain with a paracetamol/ibuprofen combination. Stronger painkillers didnt seem to work. I also take calcium and flaxseed oil supplements, which are supposed to be good for joints/bones. I have recently heard that collagen helps with aches and pains and I wondered if anyone knows if this is true? I don't want to waste my money.