Why is my penis small, weak & painful after masturbation?

It's typical for male growth to range in size. Factors like genes, hormones, and wellness can influence the length. Alternatively, if someone is feeling stressed or sad, they should talk with a friend about it. 

Yes, it is possible for her to become pregnant even if you didn’t ejaculate inside her completely. There are still sperm in pre-cum that can result in pregnancy. If she has symptoms such as a missed period, feeling sick or throwing up a lot, or her breasts being sore and tender – then it is possible that she may be pregnant. To avoid this, use protection every time you have sex. 

When it comes to sexual issues; you need to know that they can affect anybody at any time due to various reasons. Common signs may include trouble with erections, low libido, and difficulty reaching orgasm. These problems might be brought on by stress, anxiety or fatigue from other areas within your life such as work or school among others; this could also stem from relationship challenges (e.g., arguments), not just illnesses. Please share your specific problem in detail for a better analysis and advice.

The discharge from your vagina is quite normal and it could turn white. The material used in making the dildo might irritate your vagina hence this. When you see some itching, redness or strange smell together with the white discharge, be sure that you have an infection. To prevent this from happening again, ensure that you always clean your toy before and after using it and also make sure that it is made of a smooth body safe material. 

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. 

It's usual for people as they mature to have trouble obtaining and preserving an erection. This may happen because of reduced blood circulation, specific medications, stress, or fundamental illnesses such as diabetes or cardiovascular disease. To improve your condition, try remaining physically active, eating well, managing stress, and talking to your doctor about possible remedies.

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.

Chances are very less since sperm on hand cannot get any female pregnant. 

It often happens because of stress or sexual excitement. Having frequent erections is also a symptom of this. Weakness is felt when these occur repeatedly. It’s a simple solution. Include healthy foods in your diet plan, do exercises, and try relaxation techniques to reduce stress.