got cramp in my feet

I finally fixed my foot cramp. Ive been having sever foot cramp these last couple of days. dunno what iv done to cause it.. maybe my feet are just getting weaker or something but I am no doctor so im only guessing. Literally I just had to move my toes only a little bit and BANG! I get foot cramp. However what I have started to do now is wear metatarsal pads in my shoes which are proving really effective! I wasn't just getting foot cramps but also under my heels because my work requires me to stand around alot and be on my feet for a bout 6 hours non stop under my heels start hurting because of the pressure.... Iv still not came up with a solution to stop this yet and if I have metatarsal pads in my shoes surely I cannot stuff even more foot care products in my shoes.. remember also reading somewhere if your shoes are too tight it can cause real problems and I dont want even more but im stuck do I go for the foot cramps or the pain under my heel.. or dont I have to make a compromise and there something I can wear that can treat both...? is there? anyone know? it would be great because i have had enough of this now! :) thanks

(I know some of you guys may say go see a specialist but I really cannot be bothered and I dont have the money to either.. we are not all rich ya know!