My fiance and I had sex on new years eve and new years day she started her period. It lasted a day like normal and was heavy. A day later she took a home pregnancy test and it showed positive. Is this a true reading or is there something that might show a false positive results? Should we try another test now since it's later down the road. We want a baby but I'm not sure this is a positive reading and don't want to discourage her about it. The biggest question is , can it be true to have intercourse and get ur period and still be pregnant a day or to later without us doing anything since before her period.