Is bleeding after using a hairbrush normal?

Masturbation is a normal and positive practice. It is not a problem and does not need treatment. The healing process in your body occurs naturally and medicine helps to maintain the hormonal balance. Masturbation will not be a hindrance to your marriage. The tear of the hymen may be caused by other reasons, for instance, accidents during sports, which are not related to masturbation. However, the hymen should heal naturally. 

You can be sure you don't have a particular disease since the results were negative. Sometimes, the virus may take a couple of weeks to become detectable in the tests. Fever, fatigue, and the swelling of lymph nodes are indeed some of the possible symptoms of HIV. In any case, these symptoms may result from other ailments. If you're concerned, it's always safer to keep taking regular tests. 

It's completely normal to worry about things of this nature, though the likelihood of being pregnant is extremely low. When utilized appropriately, condoms are approximately 98% effective in preventing pregnancy. Keep in mind that sperm cannot survive for long in open air therefore changing it after a while decreases the risk even more.

1-2 times a week is completely acceptable for someone your age. Plus, it is a safe way for your penis and blood flow to travel. Masturbation, as a normal and thus healthy activity, can be seen as such. It can even be a means to release stress and tension. Just be careful not to do it too much, as that might lead to some irritation. 

Excessive masturbation may cause erectile dysfunction. Consult a doctor immediately