The main types of urethritis that can be transmitted to your spouse during sex are as follows: 1. Non-gonococcal urethritis The pathogenic microorganisms are Chlamydia and Mycoplasma, which are much smaller than bacteria. During sexual intercourse, the pathogens hidden in the mucosa of the urethra take the opportunity to invade the spouse, and the onset of the disease is mainly manifested as frequent urination, urinary urgency, painful urination, and secretion of a small amount of purulent material. The majority of patients have mild or no symptoms, the development of the disease is hidden, to female patients more obvious. The pathogen is trichomonas, and trichomonas is very tenacious in the in vitro environment, so it is also highly contagious. It can be transmitted through sexual intercourse, but also through bath tubs, baths, bath towels, swimming suits, etc. The disease mostly occurs in women and may be transmitted to men during sexual intercourse. Itching, burning and thin white discharge from the vulva are present during the onset of the disease. If there is a urinary tract infection, painful urination, frequent urination, and sometimes hematuria may occur. However, some people infected with trichomonas can also have no obvious symptoms. 3, gonorrhea There are also some serious STDs that are transmitted through sexual intercourse, such as gonorrhea caused by the bacterium Neisseria gonorrhoeae.