@Maru 'give birth' is the future tense, so
'Once you give birth on Oct 31 (due date), you'll blah blah' or 'Once your water breaks, you are about to give birth.' - future
'You need to go. Your wife is up at the hospital giving birth.' - present participle
'She gave birth on Nov 1. A little later than expected, but she's fine' - past
In that panel, it would be speaking about the past, so 'gave'
Also, you're flying through these translations. Keep up the good work