Strange period or implantation?
So... Normally I have a 29 day cycle but this time it was 33 days and my period was extremely weird. My period was due on the 25th of November and I started with brown spotting on the 23rd of November this lasted 5 days! Thats my normal period length. Just a small amount of brown on a pad not loads. Then at the end of day 5 it was a little heavier then I got red blood for 3 days it was a medium flow. The brown started 7 days after my fertile window according to the app I am using. Any advice? What's going on? I've had bleeding after sex too... Just spotting and now nothing could it be implantation bleeding, breakthrough bleeding or just an odd period?