www.amazon.co.uk/15-Ultra-Early-Pregnancy-earlier/dp/B0026RQ75W/ref=sr_1_2?ie=UTF8&qid=1401051919&sr=8-2&keywords=pregnancy+test
Just in case this catches anyone else out, I got 3 or 4 negatives in a row with these tests after my period was late, and then got a BFP with an FR - have checked again today, still a BFP on the FR and a BFN with these amazon cheapies....I assumed they were just the same but at least in my case it appears they are not - result was my drinking rather a lot of vino to cheer myself up as I was convinced I wasn't pregnant, when in fact I am....