I've tried everything but I can't warm up?

I got in from work and its old outside and at work. I've been laying in bed for 2 hours since with my electric blanket on the highest setting, tights and pjama bottoms, wooly socks, two tops and a jumper. The radiator is also on. This happens every day and it usually takes around 4 hours for me to warm up. in this time I can't cook dinner, i can't bath in fear of getting out and having to warm up again. It really is making things difficult. My hands suffer the most, i'm an 18 year old girl. Any advice would be fantastic