I took a clear blue pt and got a vvfl and later my husband and me went to the clinic and I took another test there to try to confirm the pregnancy. But I noticed some bright pinkish red so I assumed af decided to show her face. So of course the nurse tells me the pt came back negative. I was upset. Later on that day I go pee again and noticed it was slightly brownish in color but there wasn't a lot of it. So my husband says what if it was implantation bleeding. I look at him like I don't really want to give myself false hope only to have it really be af. But this morning was the same thing there was no af. So my husband and me decided to do some online searching. And what we found was that when implantation does take place that it will most likely give you a negative on your pt. So with that being said I decided to retest in 3-4 days. That's assuming af doesn't show. Because it say that you need a couple of days to pass to take the pt.