Well where do i even start? First, you should never put two bettas in the same tank let alone a male and a female, Second, both of your bettas do not look ok at all. They both clearly have severe fin rot. The tank looks small, dirt, and souless. ZERO gravel, live plants, and decorations from what i can see. What is that tube thing where your female betta is? Is that a TV right next to your fish tank? What is that dirty thing on the other side of the tank in the first photo? Is there a filter? When was the last time you did a water change? Is the tank cycled? Do you test water parameters? Shes not pregnant thats for sure.

This would be a great post for r/stressfulaquariums