What’s going on

AF ended about 3 days ago and ever since I’ve been having this really watery spotting that’s a tinge beige in my panty liner that smells.. it’s not discharge it’s spotting. I know after your period you have dry days up until you’re fertile window but I’m so confused on why this is happening. The last two cycles I had I’ve noticed when I finished I had that. Anyone else get that or is it just me? It’s ONLY after my period is over and it’s going on day 3 of being that way. When I get to my fertile window it goes away and I’m back to my normal white cm..