Okay another freaky ghost experience, please what is going on.?

Okayy a while back i asked a question that I though I had a ghost because my things were going missing and returning days later. Well for about 30 minutes now ive been on the laptop in my front room, and all of a sudden my left side got completely cold and my right side remained warm, and every now and then I felt a blowing feeling, what is going on? I think I should tell you that my mum died in 2004 when i was 11, and a week after i smelt her feet and perfume [dont ask about the feet haha] and never since these incidents have i experienced anything 'paranormal', but just recently its been happenning. thanks, Mel x