Yes. Even if a woman has regular periods, the timing and duration of ovulation (the process of releasing an egg from the ovaries) can change each month. Also, it is common for women to mistake breakthrough bleeding (bleeding or spotting between periods) for an actual period. This breakthrough bleeding may occur during ovulation when a woman is most fertile. You should also be aware that under ideal conditions, sperm can survive inside a woman for several days. I strongly encourage you to go see your provider for a pregnancy test and to discuss the different birth control options available to you. To find a confidential, free clinic near you, check out the health center locator: https://factnotfiction.com/clinic-finder/
In addition to becoming pregnant, you could also get an STD. You should discuss STD prevention with your health care provider as well. You should also be using a condom at every single sexual encounter because condoms are the only birth method that protects against STDs as well as pregnancy. Of course abstinence is the only 100% way to prevent both pregnancy and STDs. It should always be considered as the “gold standard” of birth control options.
Hope this helps.
– FNF Experts