BFP yesterday

🙈🙉🙊 • Mom to 2 amazing little boys.
My husband and I weren't ttc as I miscarried March 1. Well I guess things happen when they're supposed to. I realized I was late yesterday and got a BFP. I'm just kind of confused because with my son (2yr 4 m) and the miscarried pregnancy, I had the same symptoms, sore boobs, cramping, exhaustion. This time I had nothing (until today) my beasts aren't sore, I'm not tired, but I did start cramping this morning. Is that normal or am I probably just going through a chemical pregnancy? It's just odd that my beasts don't hurt at all. Just curious. I'm probably only around 2-3 weeks.