I had a chemical pregnancy in May and then got pregnant in June, so I didn't really have a CD1. Here is what I do know, I noticed ewcm on June 26th and on June 27th I got a positive OPK. DH and I did the baby dance on both the 27th and the 28th. Not sure when you actually would consider the day I O'd? Is it the day the ewcm showed or the day the test turned positive? So confused. I know it just the difference of a few days but should I base how far along I am and my due date on the 27th? I know eventually scans will help clear it up but just curious for now.