Any ideas 💡👀

Sooo I just stopped taking my birth control Thursday. I’ve been on this birth control called APRI for maybe close to a year not much more than that ..today is started lightly bleeding just went to go change my tampon & I had a jelly/snot like thing on my tampon when I pulled it out ... haven’t went to google yet but does anybody have any idea what it was ?? 🤔🤔