Spotting/Cramping but AF due 6/6?!

Kristin • Trying for #2!
Hey ladies! Today has been weird for me. I am CD 24 out of 30-31 and I have been noticing cramping and spotting like I'm about to start. Usually I only have cramps during AF but since I have d/c my birth control it seems like my whole cycle is out of whack. (TTC since January when I stopped the bc) 
​I am not sure when I O'd but I believe it was on the 19th due to some pinkish spotting. I haven't done opk or bbt this month. Dang it!!