Thanks for the query.
In case of regular periods, the possibility of pregnancy
is less in your case.
As usually ovulation won't occur during first 10 days of the cycle in case of regular 28 to 30 days cycles.
So you better wait till your expected date of periods.
And if you miss the periods, go for pregnancy test.
If the test comes positive, then you can go for tablets to induce abortion
For more details you can ask me directly through the premium forum.