I knew very very early on. I knew I couldn’t test foe a few days, but with both of my pregnancies I knew. I could just feel my body doing different things.

Yup. I believe it is likely especially if you are very intuned with your body. Last 2 times I got pregnant I just knew I was, I felt different. The first time I lost it around 6 weeks but the 2nd time I was able to find out early enough that I got put on progesterone to keep from losing it, I am now almost 35 weeks!