Pregnant so soon after loss??

I had a miscarriage which led to a D&C on May 7th. Around May 27th, I received a negative test (I wanted to be sure my levels were dropping). On June 17th, I had some bleeding which I assumed was AF, but only lasted two days. I took a hpt yesterday with a BFP! I went in for a blood test yesterday and they confirmed! But I am so confused on the timing! I'm not sure how far along I am, using June 17th as the first day of my last cycle I am 3w6d which seems to correspond with the blood test. Based on "baby dancing" and when I would have assumed ovulation was I just don't understand the timing! Hopefully I am just overthinking! Being first timers, and losing our first so recently I am so unbelievably nervous! Will be counting the days until my first appointment Aug 6th!!