Check your heaters & a/c tonight to see if they are working.
I had my a/c & heater blowing hot air constantly. I lost loads of coolant & it caused my car to overheat. I stopped driving it cos i didnt want the head gasket to go.
Turned out to be the fusebox that caused all the problems, Have u checked your fusebox recently? Alot of people are suffering it at the mo.
Apart from that I cant really
help you im afraid. If it is the fusebox it will probably cost about £90 at a seat stealer or cheaper elsewhere.
Failing that you would probably need somone who has VAGcom or get it booked in somehwere to get looked at.
Keep checking on here tho, Im sure some of the others will probably be able to point u in the right direction