With DS I could tell you at any given point in the week what day I was on, how many days I had left, how each of those equated into trimester, months, etc. It felt like I was pregnant for 3 years - but I was hyper focused on the pregnancy to the point I didn't have much outside life.
This one I swear it was yesterday I was calling DH from work with the news that I'd taken a test over lunch. Now I've got like 10 weeks and I'm bug eyed like "HOW THE HELL!?" Where did the time go?