What Trimester is 13 Weeks?

Weeks to go in Trimester One

• 2 Weeks
• 3 Weeks
• 4 Weeks
• 5 Weeks
• 6 Weeks
• 7 Weeks
• 8 Weeks
• 9 Weeks
• 10 Weeks
• 11 Weeks
• 12 Weeks
• 13 Weeks

Trimester Periods^[1]

Trimester One:
0 Weeks through 13 Weeks and 6 Days
Trimester Two:
14 Weeks through 27 Weeks and 6 Days
Trimester Three:
28 Weeks through 40 Weeks and 6 Days