Brief unprotected vaginal sex with no ejaculation. I'm female.
No reason to doubt it, what was your risk?
Thanks for your response. autocorrect changed my title to unified, should have been unigold. There was a line next to control, nothing next to test. I don't remember looking at the reservoir where the blood and solution were put, but that's where the manufacturer states it should be a red dot or the test is invalid. No internal control.
Easy to forget things and then worry.
As long as there was one dot (and not two or no dot), you are negative.