Am I experiencing implantation bleeding?

I’ve had severe migraines for many years now. I recently discovered they usually only occur on the days I don’t take my birth control. I’ve been switched to a birth control that I take continuously, and never get a period. I haven’t had a real “withdrawl” period, like 28 day cycle in over a year. Just recently my boyfriend and I have decided to try to conceive. Because I can’t get off of my birth control I tried some experimenting with it. I found that if I miss three days of BC I get a migraine on the third missed day. I also start to bleed that day from not having the BC hormones in me. So for the past four weeks I have been taking one pill on one day, and I skip the pill for two days, then take one pill on day four, then skip another two pills etc. I’ve been hoping being on the pill only 2 out of 6 days for four weeks will allow me enough time to ovulate. So for the month of February, I have missed pills on the following dates: the 4th, 6th, 8th,9th,12th,14th,15th,17th,18th, and today. So these past seven days I’ve only taken two pills, and I usually start to get really crampy and start tp bleed by now, but I haven’t. I noticed yesterday a very light pink discharge when I wipe. I thought, great, no baby. But it didn’t get any heavier, I had no cramps, and then it was gone this morning. Through the day there was still a very light, barely there brown discharge. The bleeding isn’t getting any worse. Being on birth control constantly it’s almost impossible to know if you’re pregnant or not. So is what I am experiencing possibly an implantation bleed?