4 weeks and bleeding

I’m 4 weeks pregnant and I have been spotting for a day or two. Now today it was more than spotting, but only for 1 bathroom trip, just spotting the rest of the day. I have a Dr apt in the morning but I’m just trying to mentally be prepared for what they may say. Any advise on what they might tell me? Could I be having a miscarriage?

Thank you

Mama nervous