I had a colonoscopy on Oct 22 with normal results. However a day later I developed weakness in my up arms and aching calf muscles, also have/ had some pain in wrist, thumb joints and general fatigue. I am on anti hypertensives Altace 5 x 2 per day with metoprolol25 x2 / day. Synthroid 50 of ,Statin in eve and Premarin 0.3 od . I am 68 years old and still working 8 shifts a month as an RN. Ecg,blood work, chest X-ray and stool sample normal, urine normal. I was in Kenya and Uganda for two weeks in Sept on A short term mission Took Melarone of for malaria. Any suggestions?