It’s understandable to feel concerned, especially with your fiancée’s impulsive nature now that she’s pregnant. While spontaneity and adventurousness can be wonderful traits, pregnancy does come with unique risks and responsibilities.

Here’s how you might approach this situation constructively:

1. Acknowledge Her Feelings and Perspective

• Start by affirming that you value her adventurous spirit and don’t want to change who she is. This can help her feel heard and respected rather than criticized. For example:
• "I love how spontaneous and adventurous you are—it’s one of the things I admire most about you."

2. Frame the Conversation Around Safety

Instead of focusing on what she “shouldn’t” do, center the discussion on shared goals: keeping her and the baby healthy. Highlight that certain activities, like bungee jumping, may pose risks during pregnancy. Some points to consider:

• Medical risks: Activities involving extreme physical exertion, high impact, or potential injury can endanger both her and the baby. Share factual, nonjudgmental information if she’s open to it.
• Consult a professional: Suggest discussing these activities with her healthcare provider. This can take the pressure off you and place the advice in the hands of a trusted expert.

3. Encourage Adventurous but Safe Alternatives

• Offer suggestions for ways she can still embrace her spontaneity and adventurous side while prioritizing safety. For example:
• Traveling to a beautiful destination for a relaxing vacation.
• Taking up hobbies that align with her adventurous personality but don’t involve physical risks, like photography, art, or even planning post-baby adventures.

4. Focus on Partnership

• Remind her that you’re in this together and want to share decisions, especially now that they impact the baby’s well-being. For example:
• "I want us to continue enjoying adventures together, but I also want to make sure we’re prioritizing safety. Can we work together to find activities we’re both comfortable with during this time?"

5. Address Long-Term Concerns

• If her impulsive behavior extends beyond pregnancy, it’s worth discussing how this might affect parenting. Frame the conversation around teamwork and preparing for a future that balances her spontaneity with a need for stability. For example:
• "I love how adventurous you are, and I want our child to grow up seeing that excitement for life. I think it’s also important for us to create a stable and safe environment. How can we find a balance that works for both of us?"

6. Set Boundaries if Needed

• If her decisions put her or the baby at risk, it’s okay to set gentle but firm boundaries. For instance:
• "I know bungee jumping is something you’ve always wanted to try, but I don’t think it’s safe during pregnancy. Can we plan to do that together after the baby is born?"

7. Seek Support Together

If this becomes a recurring source of tension, consider seeking guidance from a therapist or counselor. They can help facilitate discussions about safety, responsibility, and how to navigate these changes as a team.