You may be suffering from plantar fascitis, a condition in which the fascia under your feet gets inflamed. Sometimes low vitamin D or increased uric acid also cause this pain, so get your uric acid and vitamin D levels done fasting. Do alternate hot and cold water fomentation of both feet 20 mins upto 3 times a day. Wear soft sole slippers or silicone heel cups in the shoes. Take some analgesics for a week or so.
Pain in heel is mostly due to planter fasciatis,First one can try analgesic antiinflammatory medicines, with cold fomentation & wearing soft foam chappals, putting silicon heels in shoes, if not getting much relief, then Inj. Depo mederol 1 ml with 1ml xylocain 2 percent is injected locally, at the site of pain by a Orthopaedic surgeon.
Before I advise you something, just clear few points.
1. Are there any cuts / bruises or any sign of external injury to your heel?
2. Did you Jump from a height or performed jumping activity (since your Occupational profile says Student, alike activities are often performed by students just for fun), Notice any signs of fracture (swelling, difficulty moving, redness, raised temperature (if yes, get better get an X-ray done)
3. There could be a soft Tissue Injury Involvement (internal Injury to Stabilizing Structures)
4. Possible Sprain from sports.
5. Possible Soreness (which may increase along with the pain if external heat is applied in form of soaking in water / hot water bottle etc...)
6. Uncomfortable Footwear.
7. Assess what are the movements that discomfort you and the location (where at Heel)
8. What type of pain is it (electric and sharp shooting, dull, aching or throbbing?
9. What elevates pain?
10. What relives pain?
Respond to the Points above and if its Possible visit nearest Medical facility
Don't Disrespect pain, and overdo. That may cause more harm than benefit; and STAY HEALTHY