Which symptoms in a patient may indicate they are experiencing presumptive signs of pregnancy?

The presence of nausea and vomiting is commonly associated with early pregnancy and is considered a presumptive sign of pregnancy. This symptom often occurs due to hormonal changes, particularly the increase in human chorionic gonadotropin (hCG) and progesterone. Many women experience these symptoms, commonly referred to as "morning sickness," typically occurring in the first trimester of pregnancy. Their occurrence can lead to further evaluation to confirm pregnancy status.

While abdominal pain and swelling can occur for a variety of reasons—ranging from gastrointestinal issues to other medical conditions—they are not specific indicators of pregnancy. Frequent migraines and skin rashes also do not directly correlate with early signs of pregnancy and could signify other underlying health issues that require further assessment but do not offer the same strong association with pregnancy as nausea and vomiting do.