Question?

Still no AF. On cycle day 30, no signs of her arrival. The app didn't ask if I started so when I logged for today I just marked the x for not recording flow. I took a test today and still bfn. I did however have major discharge today. Like a whole glob of discharge that was completely clear but honestly looked the same as when I lost my mucous plug with my last pregnancy. Is that normal for someone about to start af? I don't know because I have been on BC for years except when TTC my first and that only took 4 months but I don't ever remember having discharge like that before my period. Any insights?