I do sometimes. You can look at my chart from this month. I just had a temp spike and then it dropped yesterday. I started some spotting last night. This morning, I had another drop and more spotting. It doesn't make sense to me, but I guess since it's happened to both of us, it makes me feel better??
Also, there is one month that I had a huge dip (late) and then it started to go back. However, that is the month that I had my chemical.