Hello everyone, my name is Leigh and I just joined a couple weeks ago. My husband and I have been TTC since June 7th when we got married. The app says that today is my peak day and that we should definitely have sex today. We had sex last night and 3 nights ago and I heard that sperm lasts 3-4 days inside so is it possible for me to get pregnant or be pregnant? Or do I have to have sex tonight?