How could help out my friend?

One my dearest friends of 10 years, she’s practically a sister, we had hung out earlier today and some of the conversation that took place has left me questioning. So background of our lives: we are both 26 years old. I recently got married to my husband and we have a 2 year old, we are living on our own. Be together for 4 years now. My friend has been with her boyfriend for 8 years now (on and off the first few years) I absolutely love this guy for her, he’s so respectful and just looks at my friend with so much love, everyone loves this guy. She suffers anxiety and bipolar depression but the past 1-1.5 year her mood and outlook seemed to improved the more involved and stable they have been. They still live with their parents, they very much want to move out and so forth but of course places are expensive.

I noticed the last couple of hangouts she asked me recommendations or experiences of such life events like moving out, being pregnant, and having a baby. At first, it seemed like it’s just something for us to talk about and somewhat curiosity about settling down. But now… I think she’s considering it …. I never want her to feel she has to hurry up with such life choices because myself and others are settled down. I would warn her about the struggles but I would also remind her it would be worth it. The most interesting conversation occurred tonight, we talked about intimacy, she gets self conscious so they only do it so often. She told me they last had intercourse was June 8th, nearly 4 weeks ago, she asked a bunch of questions about baby items, budgeting, baby shower, and newborn scares. She mentioned that if she were to ever fell pregnant she would keep it. I was driving so I can only grasp so much of the conversation. As I dropped her off home I told her if anything were to happen I would be there and she can ask thousands of questions and anything she is missing or needed my husband and I will help out. We said our good byes and I went home. It dawned on me… Does she think she’s pregnant? Or she’s considering it? Do I ask? Do I leave it alone? I don’t want to intrude her thoughts or make her anxious but if she is having such thoughts, how do I help or give confidence she can do it without crossing any emotional boundaries?