Doubts regarding abortion and pregnancy.

This question may sound nonsensical but, I had sexual intercourse (anally) on Nov 23rd 2024 during my periods after that I got normal periods like continuous bleeding for 3-4 days on 20th December which is exactly at the right time, then this month in January I got my periods on 22nd which was 2 days late but nonetheless between the cycle and it lasted for 4-5 days as well with 3 days being heavy bleeding and first and last day light bleeding. There is nothing different with my body my periods are exactly how it normally happens like the cramp and pain everything is there. Listening to this whole thing.. do you think that I might have mistaken these bleedings to be periods where it actually is pregnancy related? Also in case there's a pregnancy, is abortion at 11-12 weeks accessible for unmarried women for contraceptive failure? Please answer. Thank you.