So, I have plugged my dates into several different calculators and I seem to be getting several different dates between Sept 27 to October 3. I thought it went by the first day of your last period... The ones that are later are ones that ask how long my cycle is. Usually 32 days. Does this mean I am only 4w 5d pregnant not 5 and 3? That would be weird, because I got a very obvious BFP last Thursday. What do you think?