Essex Girls

Two Essex girls find a mirror. One looks into it and says: Hmmm, that person seems familiar.

The other one looks into it and says: Don't be silly, thats me
An Essex girl was boasting about her knowledge of capital cities.
O.K. said her friend, What's the capital of Wales.
Easy said the other, it's W.
What did the Essex girl say when the Doctor told her she was pregnant? Is it mine?