Ok my husband takes 110 mg of methadone every day. well this weekend saturday to be exact, he had to go to jail because he had an old warrant to take care of. He got out Monday evening. He was pretty sick from not taking his methadone for 2 days. Anyway so he finally was able to get his meds this morning so today he has been doing better. Well he took a very long walk in the rain and got over heated big time. now his kidneys are hurting him really bad and earlier he urinated a dark color but drank a lot of water and now its clear. except his last urination had a pink tint to it. does he have a kidney infection or what else could it be