Is this normal?

I came off a period on the 23rd so.. a week and 3 days ago, this has never ever happened before.. I just went to the toilet and when I wiped I saw this.. I think I’m actually on my fertile window right now.. I took a test a few days ago & it was almost positive.. but I’m like really confused as to what this is.. and tbh a little scared I guess lol am I okay?? Lol.. like I said this has literally never happened before