About 14 months and a week.
2 months is 8 to 9 weeks. It could be from 59 to 62 days, with an average of 61 days (8 weeks 5 days)
28 weeks is 7 months.
A bit shorter than 9 weeks.
3 months
3 months
18 months
about 4.6 months
9 months
469 days 16 months & 3 weeks
Months are generally 30 or 31 days long with 7 days in a week. That makes each month a little over 4 weeks long. 39 weeks would be almost 10 months or 9 months and 3 weeks.
The whole period takes about 9 months.
8 and 1/2 months