Due 20th June

My AF is due on the 20th of June, I have bin having mild cramping on and off for 3 days that doesn't feel like af cramping. I don't want to test as I don't want to be let down if it's neg...did anyone experience mild cramping before AF and got a BFP? I'm experiencing sore breasts but that is usual for me but I feel like they are getting worse, especially when I sleep. Last nights sleep was a horrendous, must have woken up every hour. I'm also having random hot flashes that's been happening for a good five days now. Any reply appreciated :)