Should be seeing something...?

Last period was 3/26 -- I'm not tracking but glow predicted ovulation for 4/9.I have 3 possible dates of conception(if I'm pg) 3/31, 4/11, and 4/18. according to glow, I was supposed to start my period 4/24 but it never came. I had light pink spotting on 4/16- only saw it once when I wiped. I'm never late, if anything I start 2 days early most times. I'm not stressed. I've taken two tests and gotten what I believe to be negatives. So if I'm pg based on my possible conception dates and last period I could be either 3 weeks, 5 weeks, or 6 weeks.. I should definitely be seeing a positive at this point right?