Period or pregnancy bleeding?

S a m 🌻

Hello, thanks for taking the time to read this post. My January period was very late. Two weeks late. When AF finally came, it was here and gone completely within 4 days, which NEVER happens to me. It was super light and I had not one cramp. I had a miscarriage at 6 weeks back in November but things have been normal since then. Before I got “AF” my pregnancy tests were negative. Not asking for a diagnosis just curious if this has happened to anyone else and they were actually pregnant?