text_1: My first sonogram said I was 7 weeks pregnant due date 3/22. Next appointment (5 weeks later) sono measured bby at 13weeks. Duedate changed to 3/15. Y?
text_2: Hello doctor I had sex on 14th  june with ex and 18th with husband. My usg showed due date as Mrch 23rd. How can I know who is the father?