I’m trying to wrap my head around this but struggling 😩

I found out I was pregnant 11th June, last LMP due to having PCOS was 29th April and I tend to have a period every other month.

I went for a scan 27th June which off LMP put me at 8w 4d (which I knew might be an overestimate) but the scan was inconclusive - sac measured just over 6 weeks but baby measured less than 6 weeks. So at the moment I was either super early or the pregnancy might not be viable (rescan this weekend)

I went for that scan 2 weeks and 2 days after I found out I was pregnant, so if I was closer to 5 weeks pregnant than 6 does that really mean I could have found out as early as 2 and a bit to 3 weeks? It feels so early because I thought the first 2 weeks don’t necessarily count because that’s going off of the period? - I don’t understand the DPO thing and how that compares to weeks because I’ve never tracked ovulation before, we tried to keep our TTC as chill as possible and just seeing what happens.

It’s confusing me 😬