Hi Tina Honey, How many dpo are you at the moment?
Which brand did you use to get the faint line?
Dr's usually use tests that measure about 50mi/u of hcg. A large number of the chemist brands are around 25 or less.

I havnt used any digital ones as Im a bit of a POAS aholic at times and it gets expensive! So have just used internet cheapies, Im sure there will be other girls out there that have used the other ones.

Hope you get a very dark and Clear BFP!