Morning sickness is the norm of pregnancy, with around two thirds of women suffering through the unrelenting nausea and unpleasant vomiting. But women should not worry if they end up experiencing none of these horrid symptoms; rather, they should count their lucky stars that they are one of the lucky few who get to skip that part.

Unless a medical professional specifically warns against it, sex is fine during a pregnancy, as it poses no risk to the baby.

If you were at a normal weight before pregnancy, you should gain about 25 to 30 pounds. If you were underweight before pregnancy, you should gain between 28 and 40 pounds. If you were overweight before pregnancy, you should gain between 15 and 25 pounds. If you were obese before pregnancy, you should gain between 11 and 20 pounds.

Because sperm can survive in the fallopian tubes for up to a week, you don't have to time sex to the exact moment you ovulate to get pregnant.

Some medications (e.g. phenothiazines) as well as extremes of weight loss, stress or exercise can cause this type of secondary amenorrhea. A pituitary or hypothalamic tumor would be a rare finding in these patients who were all screened with prolactin levels at the beginning of the diagnostic evaluation. However, if there is no cause apparent from the history, it is sometimes suggested to get a baseline CT or MRI scan of the sellar region to rule out a (very rare) tumor.

You can always buy it over-the-counter or online without a prescription.