Confused

My cervix has been very unreliable this cycle and opks barely had a line because I was so thirsty and drank too much water-so I decided to do fmu and got a blazing positive but creamy cm and my cervix was low and hard...the day before it was high and soft fertile cm. I took opk with fmu to compare to see if results we're invalid because of the fmu to get a positive and this morning it was negative. So I don't even know anymore lol. My bbt chart doesn't even resemble the last two charts. I've included current chart and pos opk.