Headaches and yellow mucus often suggest a sinus infection. Sinuses get blocked, causing head pressure and pain. Yellow mucus indicates your body is fighting an infection. Try using a humidifier, drinking water, and saline nasal sprays. If the mucus doesn't clear, see a doctor.

You must visit your doctor who performed the surgery since you are experiencing delayed healing or persistent wound leakage after surgery. They will be able to assess the wound and provide appropriate advice or treatment.

HIV is a virus that can be transmitted by blood. Acknowledging the low probability of contagion in your case, because the wound is almost healed. In case you get some symptoms like fever or body aches, then don't be scared it doesn't mean that you have AIDS. 

When you have a dog bite, the area may hurt, swell, and turn red which could also bleed occasionally. Clean the wound softly with clean water and mild soap because it’s important after which you apply some antibiotic ointment or cream then cover with a dry sterile cloth or adhesive bandages. Make sure you visit a doctor for some checkups to ensure everything is okay since there might be more treatment needed like a tetanus shot among others.

If you cut your finger and it bleeds a little bit, the best thing to do is drink small sips of water. Don’t worry too much—this will not greatly thin your blood. It will keep you hydrated and aid in recovery for the body. If you start feeling faint or dizzy, take a seat for some time while elevating your legs so that blood can return flowing towards the brain.

If you are under 30 years old and your vaccines are up-to-date, you are at a lower risk for tetanus. Tetanus is caused by bacteria found in soil, dirt, or manure. People sometimes experience muscle stiffness, which can make swallowing difficult. Remember to check your immunization records.