I have very strong, terrible pain in my legs, from the knees down. In particular, my knees hurt so badly, I can't sleep and hardly walk. I was very lazy on holiday and hardly walked for a week. Today I walked all day long whilst shopping. My housemate gave my algocalmin in liquid form but said I could eat/ drink it with a bit of sugar. I'm in terrible pain and have no other painkillers. I'm 24,f