after i started taking ar-rs letro about a week ago i have gotten severe pain in my underarms, pulled my right pec and my knees hurts..my underarm pain is so strong that i couldnt work out yesterday. im on 0.25mg ed but after yesterday im not gonna continue the letro..just wondering if muscle soreness/pain is something people normally get on letro..and if the risk of getting injured while on letro is higher than normal..