Still no period

BabyDinoMom
I was supposed to start September 28th or sept 29th but still no period, last pregnancy test was taken sometime last week, with a bfn.. Idk what's goin on with me. This is the 4th month in a row that I've had an odd cycle. In June, I spotted very light but thick brown for about a week, then a very light period for 4-5 days to spotting for a week and a half.. Same for the next 2 months after that. Then this month, super late but no signs of aunt flow.. No spotting, had slight cramps a week before I was supposed to start but only for an hour or so. Now I just have sore nipples for maybe a minute or two every once in a while..  Could t be possible to have had a miscarriage in June and my body is just trying to get back to "normal"? I'm just so confused as to what my body is doing..