I would be careful with Optalgin. It is supposed to be a “stronger” pain reliever than Acamol, but it can have side effects. I saw one site that shows abdominal pain as one of the most prevalent side effects. What is the point of taking it if the reason you’re taking is for abdominal pain. Maybe the abdominal pain will be worse as a result of the Optalgin? It’s good that this doctor says they are going to try and help the other issues because hopefully that will help your situation more than the drugs.
BTW – What does it mean that your legs feel warm to the touch? Your hands are not usually as warm as parts of your body that are covered so you will probably feel that they feel warm. Are they red, swollen, painful? Don’t read new symptoms in your body unnecessarily. It will just make you more nervous. I learned one time that first year medical students often “have” many of the illnesses that they learn about in medical school, just as a matter of learning the symptoms of different illnesses and probably deciding that they themselves have those symptoms. Don’t fall into that pit.