How soon can I recover from overmasturbation?

For someone young like yourself can be common to masturbate. It is safe to do so each day and it will not hurt you. However, excessive masturbation may lead to soreness or irritation. If you experience these symptoms, take a break for your body to heal itself. 

The risk of pregnancy from pre-ejaculation fluid outside the vagina is very low (but not impossible). The sky-high record for the lower cases of late periods your wife is facing could be of various reasons like mental stress, hormonal imbalance, or many other factors. Diving this into a regression, I recommend a pregnancy test to take a break from the worries. Be sure to use contraception methods in the future to avoid any troubles.

Nightfall, or nocturnal emission, is a common occurrence in both men and women at the same time. In females, it is the body's way of releasing extra fluid. Nightfall will not affect your health or sex drive in any way. A nightfall patient will still be interested in sex after marriage. It's so natural. Just keep on living a healthy lifestyle, and all will be well.

You may have a condition known as sexual asthenia. This can lead to weakness, body aches, and vomiting before or during sex. It may be caused by physical or mental issues such as stress. Make sure to rest, eat well, and talk to someone you trust about how you are feeling. If they do not go away after taking these steps then seek help from a medical professional who will give further advice on what needs to be done.