i used a one my friend had (a spare on from a box of 2) left over, it was a strange one like they use at the family planning clinic, you pee in a dish thingy & the dip this stick in the pee!!
there was a faint line , but then my friend saw on the box the test was out of date by 2 months!!
then she went & got a first response & it came up instantly, (the line!)
first 2 children i used clear blue.