Strange symptoms

Hey guys

So we did everything according to the book - advanced digital ovulation kids. Got busy the days up to ovulation and on ovulation day (7/4). Anxiously waited for no AF but it came this past Sunday very faintly. Was super strong Monday and the fizzled out Tuesday. I normally have it for 4 days like clockwork. Then nothing Wednesday but I was super bloated mon-wed. Now today I was super nauseated which I have never had and light headed and now I have some strange spotting going on again. What is this shenanigans? Thoughts?