Or maybe not so random, I've been getting bitten for a while and never saw anything on me, a few minutes ago I felt something on my arm and grabbed it, and put it in a shot glass with some soapy water, it's definitely one of the buggers. Complicated by the fact I was sitting on my bed, so now I don't want to go to bed. (I'm very phobic of fleas, and people always argue with me about this but I did have one living in my hair for three days when I still lived with my parents, which is perfectly possible.) I live in a house share, so I've emailed my landlady who's always been very good at sorting things out. I'm tempted to walk up to Tesco and buy some flea spray!