Ouch... I just found out that a site I went to a while ago could have screwed up my computer, how do I fix it?

Question

It's extremely slow, I thought it was because it doesnt have enough memory, but I just learned that this site I went to is not legit and it spams the h**l out of your computer. So now I don't know what to do, I don't get virus protection until school starts at the end of August...

Answer 1

try a program called malwarebytes, its free because its a beta. Cleared one of my spam problems.  

Answer 2

get malwarebytes anti-malware , and spybot search and destroy and SCAN you're PC  and see if they pick nothing if not then you're fine but from what you're saying it sounds like you do have something and in the future get MCAFEE SITE ADVISOR TO WARN YOU ABOUT THESES WEBSITE AND TO UPGRADE TO THE PAID VERSION TO SITE ADVISOR PLUS*WITCH ACTUALLY BLOCKS YOU OUT OF A BAD SITE)