Feeling glum about a not-so-great sexual encounter is one thing — but according to a study published in the International Journal of Sexual Health, one-third of women say they feel depressed even after a perfectly pleasing lovemaking session. One thing that increases their risk? Autonomic system dysfunction can also cause postural hypotension dizziness, fainting, and vision problems when standing up , frequent urination, sexual dysfunction, nausea, diarrhea, etc. Autonomic Regulation of Sexual Function. The Itch You Can't Scratch in Public Our bodies naturally contain a certain amount of yeast — but if those levels get out of control, you could end up with one big, itchy problem: Want to stay healthy? These manifestations occurring after intercourse can be the only clue and a hint that you should visit your doctor to do necessary examinations. Growing number of women claim unpleasant symptoms such as nausea, lightheadedness, fainting, and dizziness occurring right after sexual intercourse. When Sex Gets Germy Should you still have sex when your honey has a cold? Your best bet for reducing the symptoms of semen allergy is to use a condom, says Bednarek. However, a recent study in the journal Stroke points to insufficiency of the valves in the jugular vein, which allows deoxygenated blood to flow into the brain, according to an MSNBC article. It could also be related to feeling unequal in your partnership or other relationship issues.