Me and my boyfriend had unprotected sex 2 times withinhours of each other, about 3 days ago. I feel myself ovulating and I'm worried. I just want to know if I should beinvesting in a pregnancy test soon or not?

Yes, . Yes, you should. And then you should invest in some oral contraceptives or condoms unless your goal is to get pregnant.
Plan. Plan b is also an option should you not desire a pregnancy and still can be used today. Discuss with your pharmacist or physician.
If. If you have unprotected sex and you miss your period; recommend that you take a pregnancy test.