Pull Back & bunny hopping

So here goes (im a girl so bear with me)

A few weeks ago I noticed the odd judder when driving, but initially thought it may be some heavy wind captured under the car. However it has since got worse.

The orange warning light of a triangle with arrow around it comes on when the car pulls, on and off constantly at the moment causing the car to bunny hop, slow down etc.
I am just able to ride through it by switching gear, often going a bit too fast for the gear I am in (a bit too much throttle) but my car is definatley not well.

My mechanic cant see my car until late next week, and even then needs to keep it for a few days.

I know I just cant drive it at the moment but happy to roll up my sleeves and attempt some self help remedies as long as I have full instructions on how to do so.

Any help or tips would be much appreciated as I am just foreseeing the worst with plenty of ££££££ to follow

Car info:
Unleaded
Series 1
2004
95,000 miles on clock