 [ Symptoms ] my 19 month old son has a rash on belly migrating down towards legs [ Disease ] well i recommend you get this checked out heart problems can hit like lightning heart attack or come on gradually it sounds like you may have a heart problem that is becoming gradually worse of course this can only be determined with a physical examination and some other testing performed by your health care provider chest pain that lasts 8 hours is nothing to ignore please get medical attention as soon as you can all the best to you