if you're going by days not weeks. this might help.

what @jackee856 said!

@kera96, 1 month is 4 weeks, 2 months is 8 weeks, 3 months is 12 weeks, 4 months is 16 weeks, 5 months is 20 weeks, 6 months is 24 weeks, 7 months is 28 weeks, 8 months is 32 weeks, 9 months is 36 weeks & 40 weeks is the end of 9 months

hope this helps!