My DH was like yours, happy to just have the 2 kids. I had always wanted 3 and I finally convinced him to have another. I had similar feelings to you when we started TTCing. Were we doing the right thing? Could I handle 3? Having 3 seemed scarier than 2. I had never had those thoughts before. When I got pg in November last year, a calmness came over me. It didnt seem so scary anymore. In fact, it felt RIGHT. I had never felt complete after having just the two little ones, but once I was pg with baby 3, we just knew we had made the right decision, and I didnt regret it for a single second.

I think its normal to question yourself and make sure it is really something you want. Having another baby is a huge decision, but I do doubt that you would regret it if you went for it, just speaking from my own experience.