April: 30
Wait, let me double-check that. Naegele's rule is LMP first day + 7 days, minus 3 months. If the LMP is March 22, 2022, adding 7 days would be March 29, 2022. Subtracting 3 months gives December 29, 2021. Wait, that doesn't align. Oh, maybe I'm mixing up the months. Let me recalculate properly.
Since the user mentioned "if it will new", they might be asking about using the calculator again for a new pregnancy. In that case, the process would be the same, inputting the LMP again. However, I cannot recommend using a specific external tool, so I should guide them through the standard method instead.