By calling your DPM. If your DPM makes house call. Or try first soaking your feet in warm water, wear loose shoes and see if it helps, most likely you need a visit to your Podiatrist.
Ingrown toenail. You can try to treat an ingrown toenail at home by trying to remove the part of the nail that is pressing into the skin. You will also need to apply antibiotic ointment and soak in epsom salts and warm water. If the pain persists then you will need to see your podiatrist for evaluation.
Nail care... Ingrown toenails can be remedied through soaking your foot in warm water, removal of embedded debris from the nail borders, and applying an antibiotic ointment to temporarily soften the corners. One should always try to cut the nails strait across to avoid leaving an embedded nail spicule. If pain or redness continues get it looked at by a professional.
Soak, topical meds. But you need to see a podiatrist to remedy the problem. Don't wait. It only gets worse.
Soak. Try soaking in a solution of luke warm water and white vinegar. If the toe becomes red and swollen see a podiatrist immediately.
First aid. Treat by soaking, topical antibiotics. And open toed shoes. If you want to get better see a podiatrist.
You could get. An infection. The infection could spread to the bone over time and you can lose your toe. That would be an extreme case as once you see pus oozing and pain increase you will likely seek help.
Infection. If it become infected and spreads to the underlying bone, it can become a problem that can require hospitalization, IV antibiotics, extensive surgery including amputation. If you have circulation issues or diabetes, your risk of this increases. Treating ingrown nails before infection is often easier than once it has set in.
Get it treated. Get it treated. Leaving an ingrown nail untreated could lead to the development of an abscess and possible underlying bone infection. Get it taken care of by a professional to avoid preventable complications.
Podiatrist. For mild ingrown toenail trim back nail and pack with cotton. For infected nail the inflammed tissue may need to be professionally removed by a foot doctor. If this is a recurrent problem there is an in office acid procedure which narrows the nail and prevents recurrences.
Soaks, podiatry. Soaking the toe in warm salt water can help. Not cutting toenails too short is important. However sometimes the nail edge needs to be removed. Most podiatrists can help with that.
Try soaking. In warm water to soften the nail and then carefully trimming the nail. If you are diabetic do not try. Or simply see podiatrist and they will fix you up pronto.