My last period was on April.17 I am irregular n had sex nine days ago. Can I be pregnant?

With irregular cycles it can be more difficult to get an idea of when you are most likely to ovulate. Anytime you have sex, pregnancy can be a possibility, there are just some times in a cycle when it is much less likely to occur and other times when the odds are greater.

Wait and see what happens when your next period is due and test if necessary.