Implantation bleeding?

My husband and I just started TTC 2 months ago. I am 2 weeks away from my next period and am in my ovulation window, according to the app. Two days ago, I noticed some brownish discharge only when I wiped. Yesterday, it was a brownish red and again, only happened when I wiped. There hasn't been anything today. I have become very exhausted and only want to sleep here lately and my back is killing me. My periods are always regular. Has anyone experienced anything similar to this? Is it implantation bleeding?