Implantation and craziness

Kelsie • Wife, Momma to 3 girls, expecting baby #4! 🤰
Hi ladies. So yesterday was cycle day 31 for me. I ovulated late, though I believe It may have been as late as the 2nd of April. I was using opk strips. Anyway, I had some brown discharge yesterday and some AF cramps lately. But the discharge stopped today. Usually my period comes on in bright red blood. Could I have had implantation bleeding?
​Also. I've just been a crazy person. DH and I have fought over just about everything. Really hoping I'm not just crazy!