Hello. I have had smile flashing for two days. This morning it was still flashing. How long flashing until you usually get static smile? I am hoping that tomorrow night won't be too late as that is the earliest we can dtd. Is it too late when you have a static smile? I heard that if you dtd when ovulation strips say you are ovulating that its usually too late, as its best to dtd prior to ovulation as sperm needs time to make it to the egg.