Hi J.!
I cannot really help with your question, but I wanted to thank you for asking. I am in a similar situation. I am a little older (I turn 36 on Sunday). I have been married for almost 10 years to a wonderful, supportive husband. We already have 3 children - 4 1/2 yrs, 2 yrs and 11 months (boy, girl, girl). They are pretty close together in age...
My husband and I both come from families with 2 kids. We both had wanted a larger family, but I have to admit it is pretty hectic. We are at the point now, where we are considering a 4th. I too am afraid that many years from now we may regret if we don't have the fourth. But, I am organized and fairly (suprisingly) calm now. I may completely unravel with a 4th...
I too have had many people make comments about how many kids we have. In our neighborhood, most families just have 1 or 2. It is uncommon for 3, let alone 4 or more. I had someone at work say they were going to start calling me the old lady in the shoe...
Anyways, good luck with your decision. As others stated, you obviously need the support and agreement of your husband to make this work. For me, my husband is the one that is pushing (just slightly) for another. I think he wants another boy... I have to admit, that I just don't feel like I am finished... Plus, I have been lucky so far that I had extremely easy pregnancies and very good/calm babies.
L.