Fleas in my bed I need to rid of them!?

So my cat regularly gets treated for fleas but she still has them. I didn't realise she was spreading fleas around my room until it was too late. When i sit at my laptop they jump at the screen. When I was eating one tried to jump in my bowl then my face. I also find them on my legs and hands and when I get in bed I develop small itchy rashes with a lump that looks like a stinging nettle sting meaning I have probably been bitten. My mum sprayed my room with flea spray and hoovered and it didn't work. How am I supposed to get rid of them? I'm fed up with them jumping at me and biting me!