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

These signs might be due to a disorder with your lower back, maybe a pinched nerve. The medicines you are taking can help with the pain and nerve symptoms. Nevertheless, it is equally important to think about physical therapy and gentle exercises to make your back stronger and relieve the pressure on the nerve.

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. 

Arthritis affects the joints, causing pain, stiffness, and swelling. While these symptoms can improve with treatment, they often come back. For someone living with arthritis for 14 years, proper management is important. This includes medications, exercise, and lifestyle changes. Regular check-ups with healthcare providers help monitor progress and adjust treatment. Although arthritis doesn’t go away completely, it can be well-managed over time.

You may have a broken toe. Dropping something heavy on the toe or stubbing it hard can cause a broken toe. Symptoms of a sprained toe include pain, bruising, and difficulty moving the toe. To be sure, you should get an X-ray at a clinic or hospital. Icing, resting, and keeping the toe safe from injury will give relief to the pain.

It seems like you might have hurt your penis while you got hit by the car door. Pain, swelling, and bruising are not unusual in this case. The glossy skin could be a sign of recovery. Make sure you get some rest, wear loose-fitting clothes, and use ice packs to bring down any swelling. If these symptoms get worse or do not improve it would be best to see a doctor as soon as possible.