Have you ever felt different after sex? Not different but not like you? If you have as most men have at one point or another you should take into consideration that it is not due to any predisposition you might have, or an on rush of feelings, but rather a chemical depletion that happens after a man ejaculates.
The sperm that is expelled is nearly all protein, and after a single orgasm it can take up to two weeks to fully return to the level of hormones and proteins that is considered healthy and balanced.
As this is the case it becomes important to make sure you are keeping yourself in good sexual health and standing, because over activity can leave you depressed or angry without reason.
Hopefully it is also a way to reassure you that the feelings experienced are natural and that it should not be a sort of discomfort or embarrassment, but instead treat it as you would treat getting nutrients back nutrients lost in a day spent working hard.
Replenishing your protein is first and foremost, and a day's value can be gotten from only two chicken breasts and a can of tuna fish, which will allow for you to feel healthier and be more prepared for your next sexual encounter sooner.
Zinc is also important for more than just sexual health, but especially so here.
Foods rich in zinc are important for good sexual health, and oysters and others are good examples of where to find it.
Most important is just making sure you do not neglect your body's functioning.