After about a year or so my cycle is now becoming regular again after being on some type of BC since I was around 20 (34 now). It always the same thing, 2 days of spotting ,2 days of normal cycle, then 2 more days of spotting. This month it's a little different, it started on time but today I am on day 4 of spotting(only noticible when I wipe). Took a PT , turned out negative. I have no clue what is going on. First I thought implantation bleeding now I just don't know