Bleeding while pregnant?

I’m supposed to be 4 weeks & 6 days. I found out a week ago I was pregnant and have been having lower back pain and cramps. Which was normal when I had my son. But the last time I went to the bathroom, I had light blood. My mind is going to work case scenario. If anyone has had bleeding this early, was everything normal with your pregnancy?

Edited: I put a picture in. It’s super light right now.