Husband doesn't want another

If your husband is 100% against having another, for any reason, then I don't think it is a good idea.  It will add stress and tension that may cause relationship problems.  My husband wants a 3rd and I do not, for financial reasons (we can afford another but I want to provide the 2 we have with opportunities and experiences that requires time and money that would not be available if we had a 3rd) That said, I understand about your thought time is running out.  I would talk to my husband in length about why you want another child, how you can work your budget to cover another, etc.  Good luck, hopefully you can make a decision together and if you agree for another you have a healthy, happy pregnancy and baby!  =)