My last cycle was quite erratic but it did result in pregnancy, a short lived one, but it was a pregnancy. My temps went up and down a little until they started to go obviously higher just one day before I tested positive and then continued to rise then steadied out until I miscarried the following week. It's a bit early for BB symptoms I think. I often get that as a symptom in week 3 of my cycle but find it disappears in week 4, last cycle it did not disappear so for me I know it's a good sign, but only if it's week 4.