If it's really thick, there could also be some disintegrated toilet paper in it. Which is also not really something to worry about.
Overall, discharge is just normal stuff, not anything to be worried about.
And yeah, if you have previously taken birth control or anything that prevents ovulation, it's totally possible that you're just not used to experiencing any of the things that o along with that part of the cycle.
Sorry you are dealing with distress over this. I totally understand.