Aygo 2007 - Possible Clutch Issue

Hi

I purchased a 2007 reg Aygo Blue back in August last year. As I've been driving it over the last couple of months, the biting point on the clutch has got higher and higher to the point where I've almost completely released the clutch before I reach it. My gears have started slipping and hill starts have become a nightmare (either stalling or wheel spinning). This wasn't happening to me in the beginning, so I don't think I'm driving any differently.

Does anyone know what could be causing this or has anyone experienced the same problems? I'm 31 but only started driving in August and I'm worried that a garage may take advantage of the fact I'm a woman and don't know a lot about cars! So I wanted to get a feel for what the problem could be before I book it in because I'm really worried about how much it may cost to rectify it.

Any advice would be really appreciated.

Thanks

Chrissie