Taking a cruise while pregnant is not necessarily a "bad idea," but it is subject to very strict industry-wide safety regulations that every expectant mother must know before booking. Almost all major cruise lines, including Royal Caribbean, Carnival, and Disney, have a firm policy that prohibits passengers from sailing if they will enter their 24th week of pregnancy at any point during the voyage. This rule exists because cruise ships are not equipped with the specialized neonatal intensive care units (NICU) required to handle premature births or late-term complications. For those in their first or second trimester (before the 24-week cutoff), cruising can be a wonderful "babymoon" experience, but it is essential to carry a doctor’s letter confirming your fitness to travel and your estimated due date. You should also consider the risk of seasickness, which can exacerbate morning sickness, and ensure your travel insurance specifically covers pregnancy-related medical issues. Choosing a route with frequent port stops and avoiding remote, trans-oceanic crossings is the safest way to ensure you have access to land-based medical facilities if needed.