Should i be concerned if i had sex while i was on my period and i just urinated and when i wiped a thick white slimy mucus came out???

Discharge needs test: Well sex while on your period is very messy and the discharge is now coming from different areas of the vagina. The white slimy mucus can be from you or your partner. If this is associated with other symptoms like itching, odor, burning when you urinate or abdominal pain you may need to seek an internal exam. It is also important to know whether you were at the beginning or end of your cycle.