its quite painful . At first i was quite worried also. there is a few times, i feel that its so painful that i break into sweat and so tired after that( the pain draw so much energy).. Doc say normal but i find the pain sometime quite unbearable. sometime when i am at work, i dont want to scare ppl around me. seriously i feel like screammmming. but of cos my pain tolerance is low ( i guess). i read online, try not to stay in the same position too long.. dont do big action exercise...do some light stretching. another thing i am so worried is leg cramp!! anyone experience that?