Shoot, I gotta go to bed, but look into downloading free antiviruses... I know it sounds fishy, but I use one called Avira and it seems good, also there's Malwarebytes which is temporary...
Someone told me Avira isn't secure though, so maybe look around a bit. I tried AVG and it slowed down my computer a great deal and installed extra components, more than Avira I suppose...
But yeah, just look around... I gotta go now, goodnight. o.o Just wanted to help >.<