Wondering

Jennifer
Ok, been ttc-ing for a while now, but have a question. Got my AF March 15th, glow told me I should get april's flow in about 12 days. Just this evening I noticed some very light brown discharge on the tp. I have never seen this before and we have been trying for almost 5 years. Any insights out there?!? Btw, I haven't gotten a positive ovulation test yet this month!