Pregnant while breastfeeding - no period

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Has anyone been unexpectedly pregnant while breastfeeding and not having their period back yet? My husband and I had an “oopsie” about 2 weeks ago, and I can’t help but notice I’m feeling allllll the same things I felt with my previous two pregnancies. I have taken MANY tests and have had what seems like the faintest of lines on blue dye (appeared immediately, not left to dry) but nothing on anything else. I have yet to have a period as due to ebf, but we are 9 months down the road so baby is taking food and has reduced daytime feeding. I know it “can” happy but it’s rare without a period back.

Looking for anyone with a similar situation, and how long after you managed to get a positive test?