For those who got pregnant on the paragard, what were your first clues that it failed. Obviously a…

For those who got pregnant on the paragard, what were your first clues that it failed. Obviously a missed period being a main one but anything else that stood out to you.

Backstory: I have had my paragard for almost 6 years now and since day 1 my cycle has been 24 to 26 days and always 10 to 12 days long. Right now I'm 4 days late and TMI a slimy brown discharge. Any advice would be greatly appreciated. Edit to add I will be testing tomorrow just looking for any experience.