I've been testing since 11dp5dt and have received two strong positives with a Frer. This morning on my official test day, I used the test the clinic had given me (which had no instructions) and it was a very faint line that didn't appear for some time.
In a panic, I found a clear blue 'how many weeks' test I had left over which came back as positive 2-3 weeks.
What a panic. Has anyone else had experience of IVF clinic tests?
Many thanks