Can I take a home pregnancy test at 2 weeks pregnant?

I am 2 weeks. Well, not really that sure tho. It has been 2 weeks since I have unprotected sex. I had sore breasts and cramping before my period. It slowly faded away when my period came. My period wasn't late. And I had my period at 6 days. It usually takes me about a week, but its just a day missing. Me and my boyfriend really didn't do it all the way. We only putted it in twice. Yes, twice. What I mean is like once we remove it, we put it in again. We only did it twice. But, can that still make me pregnant? We had sex on May 9 and I had my period on May 19.