My house was fumigated in August due to snake issues. But unknown to me, the stored water has somehow become contaminated with residual of the chemical (Dimethoate). I used the water afterward and noticed burning sensation on my skin so I stopped immediately.
However, the burning sensation hasn't stopped since over a month, its worst at night hardly sleep. I ran a blood test and came out positive for malaria and typhoid which I treated but this burning feeling persists with headaches, stomach shakes/ chill, cold right arm, and muscle pain. Also, red lines occur on my skin about three times and disappeared.

Please, I need help to know what to do.