Spotting

Is spotting normal? I had my last period Nov 12 to the 18th. My app says I’m 6 days late but I started spotting brown blood dec 5th-7th when my period was due the next day. On dec 8th only had brown blood in the morning only when I went to the restroom and after that nothing . Dec 9th I spotted in the morning again but nothing through the day. Today I’m spotting again a bit more but not enough to fill a pad. I’m really worried has this happened to anyone?? Today is Dec 10 and u still haven’t gotten a full period.