You need three basic things mate and they are money, aptitude and health. Most people have two out of three of them. Have another look at them, do you really have all three?
Some people would say a passion for aviation is another thing you need but there weren't many people on my full-time course at Oxford Aviation who even had that!
You must must must get your medical sorted out first. There is no point at all in even going for a trial lesson to see if you have aptitude if there is something wrong with you physically. You may thnk you're fit but the initial medical done by the CAA costs over 400 pounds and is very thorough and will tell you for sure.
Your question about pilots pay makes me yawn which is exactly what I think you would be doing as a pilot anyway.