I need some advice. I have only been temping for less than 2 weeks but the last few days my temp has just gone up and down. I have watery cm and my cervix is in the same position but open a little, so I think I am getting ready to ovulate. Do you think maybe there is a problem with my thermometer? I bought the Walgreens brand BBT. (Disregard the temps from last weekend, I woke up really late so they were high). Ooh, also, do you guys use a conversion and change the temps (from days you take them at a different time) and chart the converted temps? Or do you just leave the original ones there and disregard them? I changed them to the converted temps originally but I was afraid it would be inaccurate.