If you have had unprotected intercourse
, then theoretically there is always a chance of pregnancy
As your periods have always been irregular, then wait for as long as the longest delay of your period earlier.
For example, if your periods are 10 days late, then test for pregnancy after 15 days of your missed period.
If the test is positive, consult a gynecologist for further help if you decide to terminate.
Please use a reliable, permanent contraceptive
in the future.