Abrupt weird period

J

Hey ladies. Just wanted to see if this has happened to anyone else. So my cycle according to glow was gonna start the 25 and typically lasts 3 days on a 29 ish day cycle. On the 24th I had brown spotting all day it was actually more than spotting but not like a flow. Then the 25th AF came. Normal bleed maybe a bit heavier than normal but can’t really be sure. Then day 2 got much lighter. I’m now on day 3 and less than spotting almost non existent now. Has this happened to anyone else. This isn’t typical for me. When af is due she comes and it starts out like normal but very light spotting the day before. Then by the end of day 3 I’m still bleeding just light and ends by the end of day 3. Confused!