I was wondering how you went. I am so very sorry that this has happened to you. I personally wouldn't touch Discover with a barge pole. My experience was harrowing. There is a thread on BB about my experience and I really don't know how to find it. Basically they will go positive and then disappear. The company says that they are only to be regarded as positive if they stay positivae for 48 hours. mmmm... If you get a disappearing positive it is to be regarded as a negative.
Truly the best thing is to wait for another couple of days. I use Lullaby hpts now as I have never had any problems I don't know which one I would buy at the pharmacy. I am sure some of the women will have some suggestions.
Hugs again. I hope this is a real bfp for you.