How do I overcome sexual weakness?

HIV spreads through unprote­cted sex - a virus with potential symptoms like­ flu. Fever, fatigue, the­se may occur. Testing provides the­ truth, so that's wise.

If you happen to have a pimple on your penis, it does not necessarily mean that you have an STD/STI. This could be caused by something as simple as irritation or clogged pores. However, it is advisable not to engage in sexual activity when the pimple is painful, oozing pus, or has other accompanying symptoms. Keep the area clean and dry and if it does not get better, seek medical advice. 

You're noticing a change in your penis size during masturbation. This can be due to the following reasons. Potential reasons include stresses of life, fatigue, or physical diseases like low testosterone. Take the time to chew the turnover of your body by consuming nutritious food, exercising, and giving yourself the rest needed. If no improvements are observed, the best step would be to consult a doctor for probable treatments.

It's very doubtful that pregnancy may occur in this way as you described. Pregnancy occurs when sperm fertilizes an egg, and usually requires direct contact. However, the way you illustrated it is not the usual way of getting pregnant. Should you be anxious, listen to your body. Check for common symptoms such as missed periods, vomiting, or breast tenderness. If this is the case, then take a pregnancy test to calm your anxiety.

First things first – masturbation won’t affect your chances of having children later on in life. It’s normal and won’t hurt your fertility at all. If you’re ever worried about your health or ability to have kids, it’s best to talk to a doctor who can give you accurate information and help calm your fears. 

Anal sex can le­ad to problems. Pain, bleeding, and discomfort may happe­n during or after. Not enough lube, tissue­ tearing, and infections cause this. Use­ lots of lube. Go slow. Talk openly with your partner.

I get your fear but I can tell you now that your girlfriend can’t get pregnant from what you’ve said. For pregnancy to occur, sperm needs to fertilize an egg which usually happens during unprotected sex. There might be a small number of sperm in pre-cum but the likelihood of conception taking place in the situation that was explained is very minimal. It would be best if both of you do not want any STIs or pregnancies, and use condoms or any other forms of protection available.