Low disk space and low virtual memory

Hi and thanks for reading this,

A while ago i was running out of disk c space, so i checked to see what was taking up so much space in my c drive. I found thet my temp folder was very large, so i deleted all the files in there after reading that it was safe to. Now i keep losing disk c space and i get messages such as low disk space and low virtual memory. I am unable to do anything, please help me!

Thank you