Why do I experience lower back pain on my right side when sitting for over 30 minutes?

These­ symptoms signify heart trouble. It could be a he­art attack or angina - artery blockages. But muscle strain and indige­stion can also be possible causes. If fee­ling such things, talk to a cardiologist

The redness, bleeding, and pus are signs that your wounds might be infected. It's important to keep the wounds clean and dry. Use Betadine for dressing, as it helps prevent infection. Avoid putting too much pressure on your leg wounds to reduce bleeding. Your wounds will heal with time. 

If you're experiencing pain on the inside of your legs that worsens with pressure, it could be due to muscle strain, adductor tendinitis, groin hernia, or nerve impingement. It would be best to consult with a healthcare professional for an evaluation, diagnosis, and appropriate treatment.

It is bit difficult to remove femur nail after 7 years but it can be done and better to take opinion in person. Yes this will heal after removal. 

Next step: consult orthopaedic surgeon doctor