Thoughts? Pic attached 🙈

So my period was like 3 days late, I started last night and when I wiped it was heavy regular colored And everything normal for my period. Well every tampon I've changed since has had nothing on it or it has been super light or just a pink color most of them like the picture! What could it be??? I've had my period since I was 10 and I'm 22 now and I've NEVER had it do this before!  I've had this tampon in for at least 5 hours and this is all I got and when I wiped it was clean. No blood no anything!