Months and weeks will never match exactly as there’s 4 weeks and 2 days or 4 weeks and 3 days in most months
I used Ovia during pregnancy and sometimes look at it now c
2 months and 1 week is 9 weeks. There are more than 4 weeks in a month (apart from February). It's right
I use the NARA app Hope it helps xx
Months and weeks will never match exactly as there’s 4 weeks and 2 days or 4 weeks and 3 days in most months