Breast clinic referral

I posted the other day about being reffered to the breast clinic due to a small, round lump beside my areola. 

The breast clinic rang the other day and arranged an appointment for the 27th of feb.

I just recieved a call offering me a cancellation on friday and as much as i wanted to take it i had no way of getting there as my partner is at work. 

My issue is now im very firghtened again as i read somewhere on here before that they dont usually offer someone who already has an appointment a cencellation as its a lot of rearranging - and that they are more likely to just offer the cancellation slot to the next referral. 

Does this mean they are rushing me in because the doctor said she thinks its cancer on the referral? The doctor told me on the day that she didnt think it was amything to worry about and i wouldnt like to think she lied to me just so i wouldnt worry.