False positive on Clearblue digital

Ana

Hi

This AM I took a clearblue digi and it said “pregnant.” I had some Up and Up brand frer and took one of those and nothing. Anyone hear of false pos on Clearblue digital?

I had a “period” or what I thought was a period on 10/30, brown spotting, lighter flow on 10/31 and back to spotting on 11/1. I only tested cus my boobs are sore and that usually goes away after my period is done.