A 27-year-old nulligravida who is desiring a pregnancy comes…

A 27-year-old nulligravida who is desiring a pregnancy comes in today with no complaints and wants to know if there is anything she should do in preparation for a pregnancy. Which of the following statements is correct when counseling her about days of maximal fertility during the menstrual cycle?

Your patient reports a normal menstrual period 5 weeks ago,…

Your patient reports a normal menstrual period 5 weeks ago, and a positive home pregnancy test 1 week ago. She noted pink vaginal spotting last night, and it has continued this morning.  Transvaginal ultrasound reveals a gestational sac within the uterus, but no fetal pole is identified.  Which of the following are the most likely diagnoses?