You may notice some yellowish discharge coming from the penis, although it may also be grayish. Any unusual or unexplained discharge may be a sign of an STD. [1] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source

You may notice burning after urination or ejaculation. Some men with trichomoniasis may also have difficulty urinating or ejaculating. [2] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source There may be some mild swelling of the scrotum as well. If anything looks or feels unusual, you should seek medical care. [3] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source Keep in mind that these symptoms can indicate problems other than an STD as well, which may require a full medical evaluation in addition to STD testing.

You’ve had multiple sexual partners. You have a history of having other sexually transmitted infections. You have had unprotected sex with a partner whose STD status you do not know. [7] X Trustworthy Source Mayo Clinic Educational website from one of the world’s leading hospitals Go to source

Your health care provider will take a swab of your urethra and send it to a lab for testing. It may be painful to urinate after a swab is taken. It may take a few days before results are ready and may even take up to a week if the lab is busy. [10] X Research source Many labs can perform a urine test for multiple common STDs, such as gonorrhea, chlamydia, and trichomoniasis. As the symptoms of many other common STDs are similar to those of trichomoniasis, it’s a good idea to get a full panel test. Also, if you’re worried you’re at risk because you’ve had unprotected sex you’ll be at risk for other infections as well. You should wait two to three weeks after a sexual encounter before getting tested, however, as it will take a while for viruses to be detectable. [11] X Research source

Use a latex condom if you have sex with a new partner. While condoms do not completely eliminate the risk of STDs they do dramatically reduce it. [13] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source Make sure you wait until all symptoms of a previous infection pass before having sex again. [14] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source Talk to your partner about STDs. It’s a good idea for both of you to get tested together before engaging in sexual activity. [15] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source