10 weeks. We weren't planning, although we weren't preventing either and just seeing what nature wanted to do.
I definitely felt a bit 'off' in the weeks before I found out, and was quite tired, but put that down to a resurgence of depression and the run up to a week of covid. I was starting to get out of breath quickly, and my heart rate felt like it was faster than usual (going off my garmin) but I just put that down to me getting unfit.
Not having a perdiod didn't clue me in any earlier either - my periods were infrequent, irregular and unreliable. I put that down to my cycles taking their time to regular after coming off the hormonal implant months earlier.. that or possibly undiagnosed PCOS. Either way, 8+ weeks without a period wasn't unusual.
Basically, being pregnant didn't really cross my mind. It had been 10+ months since coming off birth control and I had begun to assume that it wouldn't happen easily for us, and we'd need to start properly tracking/planning and making a real go of it.
The only thing that triggered the 'am I pregnant?' thoughts was when I noticed my OH's deodorant started to smell really odd and awful. I asked if he'd changed deodorants recently and he said no.. Even then, at first I didn't think much of it. But a few days later, the thought had percolated and I tested. That positive line couldn't have shown up any quicker or stronger!