Not sure what's going on

So my chart has been so confused. My temps are so up and down. FF has changed my ovulation date 4 times from Friday the 6 to Monday the 9. It keeps going back and forth. Here is a picture of my chart. I am not even sure if I ovulated or what's going on. Also, I had cramping and backache on Monday and Tuesday and then since Tuesday I get mild cramping off and on every day. If anyone has had a similar thing happen or knows what's going on I would appreciate any input! Here is my chart from this morning