Should i buy baby crib??

Hi mummies, I’m currently pregnant with baby no 2. My first baby had never been sleeping in a baby crib. My husband bought a single mattress for him to sleep ever since he was born (with a bed guard fence) . Now that baby no 2 is coming, should i consider buying a baby crib or let it sleep on the single mattress again ? #advicepls #confusedmommy #Anythingforbaby