Unprotected sex nov. 2nd, ovulation started next day and lasted for a week but period came three days late and having light pink/brown blood coming out. what does this mean?

Irregular bleeding: Irregular periods are one of the most common problems obgyns treat. If this is one time problem it usually resolves on its own. If this is a recurring problem you should be evaluated. Infections ; hormonal changes can cause spotting. If there is a concern for pregnancy then do a home pregnancy test . There are many options available to help regulate the menstrual cycle. Schedule a visit.

It means:: that you should use condoms, BC pills as well as spermicidal foam or gel. Do a home pregnancy test and be responsible for your own sexual activity. Hopefully you are not pregnant; however, unprotected intercourse will eventually lead to pregnancy.