Unsure if we should try for a second

My son is almost 5. I always thought I wanted kids close together but then once my son was here I felt like everything was so hectic and crazy I didn’t feel ready to have another. Then I went back to work part-time, got back in shape (I worked as a personal trainer) and felt like I had my life back. I started having thoughts of maybe we’ll just be one and done.

I felt like one was enough until this past year where I felt like something was missing and I definitely wanted another. We’ve been trying for a few months and I feel like I’m on an emotional roller coaster. I get disappointed when I take a test and it’s negative but then I get these thoughts in my head (maybe we can’t afford another, we would have so much more space if we had only one, I can go back to work when my son starts school and make more money). These thoughts keep swirling around in my head and I feel lost.

We just moved 3 hours away from my family for my husband’s job and I feel kind of lonely. I worry that if I have another baby I’ll feel more isolated. All these thoughts but then at the end of the day I think about NOT having another child and I feel this great sense of loss. Like I look at my life 10 years from now with just our son and feel like something is missing. I’m sorry, I know I’m just rambling but I’d really like some other people’s perspective. If I’m having this much doubt should I wait? I feel like 5 years apart is so long already that if I don’t have another soon we shouldn’t have another. Please, any thoughts or encouragement.

P.S. I’ve talked to my husband. He says he’s happy with one but also wants another. He says he’s happy either way he just wants me to be happy and at the end of the day it’s my decision. Great, because I’m super indecisive.