What does early pregnancy feel like?

Before you found out you were pregnant, what did it feel like to you?

Does the body feel like you are about to have a period still with the same symptoms or..?

I'm supposed to get my period this week and I've been cramping but overall I actually feel pretty good. I'm cramping, sore boobs, and feel a bit tired but overall pretty good. I usually feel AWFUL before my periods and I don't know if it just hasn't hit me yet or if I could be pregnant.

I heard that early pregnancy feels the same or similar to a period in terms of symptoms because your body is starting to change in preparation for the baby, but I'm just curious and want to know if that's true or not.