Pregnant but have my period?

I’m a first time mom. I’m 17 & about 6 months pregnant. I felt some sharp shooting pain in my abdomen & When I used the toilet, I saw a LOT of blood on my panties. Looked like my period came. Is it possible to have my period at 6 months pregnant?

Please keep rude comments to yourself. I know I am young for having a child. I scheduled an appointment to the doctors but it isn’t until a couple weeks from now due to covid. Please help. If anyone knows what this could be, I would appreciate it.

UPDATE: I had a miscarriage. I found out it was due to stress. I’m shaking.