Implantation?

Brit
Glow says I'm 5 DPO (so, expected was Saturday 5/20...I had a peak/solid smiley on CB OPK last Thursday, so theoretically it checks out). I had intense cramping on Saturday and moderate cramping/pulling sensations on Monday. I am stupid-level bloated today and earlier noticed that my usually-white discharge was ever-so-slightly brown, but it hasn't really continued that I can tell tonight. Has anyone had similar symptoms and gotten a BPF a few days later? I know we're all different, but I'm just curious! Thank you in advance!