If one leg/thigh/hip is bigger than the other, it might be because of a muscle imbalance. This means that one side is stronger than the other. You may develop this condition by constantly using your one leg when walking or doing physical exercises. To solve this problem, ensure workouts that will serve each side equally.

Maybe there is an infection in your foot. When your skin is pierced, bacteria may enter and cause swelling. The symptoms you are having such as feeling sick to your stomach (nausea), throwing up, being unable to have a bowel movement (constipation), headache, and having a high temperature could be due to the infection moving around. Quick treatment with antibiotics and other drugs from a doctor is needed so that you can get well soon. 

You might have muscle pain coupled with pressure on the neck and the shoulder region. Muscles are likely to be tensed or strained bringing about such signs. The issue of muscle dropping below your clavicle and squeezing your neck could result from sitting or standing with drooping shoulders. You can ease them by keeping the right body posture always, engaging in mild stretches that won’t hurt much, and using warm towels on those affected spots. 

The pain in your upper back might be from sitting too long or having bad posture; the heel is probably hurting because you’re wearing shoes that don’t fit well. The right breast also hurts sometimes if you’ve pulled a muscle or it’s inflamed. Take some time off and use ice packs or heating pads if necessary. None of these things help though, then get checked by an orthopedist.