From the past 3 days the muscle above my collar bone, my right arm and the muscles just below the rib cage all from the right side had started paining and now have swelled up a bit. My neck also hurts, including shoulders and the upper back area. I've been taking paracip medicine after meals in morning and at night. And from last night I'm having fever which increases and decreases at random times. Also the major thing concerning me is that my periods are 5 days late this month. And usually by this time I've had already ended up with them. Can my body pain be related to my missing periods? Or what medicines should I take or other things I do?