First smear at 24 - Colposcopy appointment as high risk. Also about to start IVF

Would really love any related stories or advise please.

I went for my first Cervical smear last Monday (I'm 24) and four days later the hospital have sent me an appointment for the colposcopy the following Thursday. Typically I  recieved the letter on a Saturday and was in panic and worry all weekend but called the doctors and they have told me it was high grade.

Was due to start IVF this month after 5 long years of not being able to conceive with My husband so I'm a bit of an emotional wreck. 

Just hoping someone can guide me to what i may expect x