PLZ HELP?!!! too early?! implantion? HELP!! PLZ HELP!!

me and my boyfriend are not trying to conceive but using pullout method. Last night I seen this in my underwear (period is supposed to come soon so I use pantiliners) and I had some cramping. I took a test today and it was negative.. I'm only 9 DPO. Too early?? Should I keep testing? He never came in me, precum only. But I've known some people to get pregnant off of precum. Also was that too early for implantion? I have a UTI and a yeast infection right now so I don't know if the sporting could've been from that. My period is supposed to come Saturday but usually comes a day before glow tells me.