How can I recover from sexual weakness?

Considering the circumstances, it is improbable that your girlfriend could become pregnant if there was no ejaculation. Nevertheless, it is good to realize that any genital contact has some risk involved. Therefore, if she starts experiencing any unusual signs like missing her periods or having abnormal bleeding; I advise you to go for a pregnancy test so that you can be sure about everything.

Masturbation Daily is normal and healthy...NO HARM in future. Just don't get addicted to it, if your are worried seek medical help

You may be experiencing a condition called hypersexuality, where a person has more frequent sexual thoughts or behaviors than usual. This can be caused by hormonal changes or psychological factors. It's important to know you're not alone, and help is available. Talking to a counselor or therapist can help you understand and manage these feelings. It's also important to focus on your studies and find healthy ways to cope with these desires.

Foot fetishism indicates that a person is passionate about feet. This can manifest in several ways such as the urge to touch, look at, or fantasize about feet frequently. Nonetheless, when it becomes a problem or an obstacle to your daily routine, counseling can be beneficial in identifying the root of these feelings and finding a way to cope with them.

It sounds like you may have hurt yourself during the activity. Bleeding from that area can happen if there was too much friction or pressure. It's important to wash gently with water and keep the area clean. Avoid any further rubbing or pressure. Let it heal naturally. If bleeding continues, seems excessive, or you experience any pain or signs of infection, visit a doctor.

You cannot get pregnant unless sperm enters your vagina. The process of pregnancy is when a sperm cell meets an egg cell. If there is no sperm from you, then there is no egg to be fertilized. In this scenario, you have nothing to fear. To be sure, watch for signs like missing periods or nausea. 

Erection problems can be due to different reasons, for example, stress, anxiety, or physical health problems, etc. It is a matter of particular importance to discuss with a healthcare professional so they can identify the particular reason in your case. Treatment methods can be medication, therapy, or changing lifestyle. The progress may vary for each patient; however, with proper treatment, there is a chance of bettering your situation.