Yes, the numbers increase when i touch the thermistor.

Excellent.

Your thermistor is 10k yes? and your series resistor 10k?

Do you have the data sheet for your thermistor, can you look up its 'Beta' value.

Change everywhere in the equation where is says 33 (my thermistor was 33k) to 10 and plug in your value of Beta at the top of the sketch and you should be there!

I.e.

float temp = beta / (log(((1025.0 * resistance / a) - 10.0) / 10.0) + (beta / 298.0)) - 273.0;

If you want to convert to deg F, F = C * 9 / 5 + 32