My last period was on May 18-22 I had unprotected sex on May 24 and had sex again on May 28,29,30 I calculated my ovulation on the computer and it said I ovulated on May 29. What are my chances that I will get pregnant??

Roughly 20-25% in any given cycle. This is because there is more to it than just good timing. Several factors have to be in place. Hopefully you will have hit the mark, if you are hoping to be pregnant... :) Most couples, who are actively trying to become pregnant, will do so within a year. Some right at the start, some not until several months later. It can also happen that it can take a bit longer even when there are no fertility concerns.
Hope it turns out how you would like it to!