As a member of the LOV, being pregnant doesn’t have any advantages. The other members have been aware of your pregnancy, you couldn’t hide it anyway. So, you were send in safe missions with someone else and low-risk of encountering heroes. During a simple mission with Dabi, you got caught by heroes and started fighting them. You were at the back, trying to find a safe place for Dabi and you to escape when you lost your waters. Entering into labor at the worse moment.