Am I pregnant!?! HELP

Hey ladies I really need so advice and help cause I'm stressed out to the max on this issue. Me and my bf had sex and the condom broke. We rushed to the store to get plan b and I took it an hour later. However this was on the 12th and it's now the 16th. I feel dizzy at times and I'm peeing a lot. Is it to early to get a pregnancy test? Or am I just overthinking it (side note: I'm not on birth control or anything)