MariChat unplanned pregnancy story

After getting drunk celebrating ladybug's most recent victory, marinette and chat noir end up sleeping together. A month later marinette finds out that she's pregnant from watching a baby theory Alya posted on the Ladyblog. Adrien watches the same video and worry's about how ladybug is supposed to protect Paris if she's knocked up.
Marinette and Adrien are 16 and ladybug and chat noir don't know each other's identities.