Super confused... HELP!

I’m super confused. My husband and I started trying for baby in September. My period has always been very regular, and pretty heavy. October came and i started what i thought was my period. It was basically heavier spotting one day and then brown light spotting a few days after. I was heart broken but we tried again and my period was due on Monday. Again it was spotting but a lot lighter. And today it is very light and brown again. Has anyone ever experienced this? What was your outcome? Were you pregnant?