Confused on how far along I would be.. my last period was June 26 but unsure how I could be pregnant from then as I would have been ovulating now

Went to the hospital last night because I was bleeding but doctor said everything was okay and only thinks I’m 3 weeks pregnant but I’ve no idea how..

Anyone else reckon I’m further along then 3 weeks?

I took this test yesterday and I feel like I’m further along than that as how dark the test is and how fast it showed up.. also the first two photos are my last 3 cycles