What a difficult situation

With everything you've been through its not surprising you aren't really considering any more kids. I guess It's hard for partners to fully understand the effect all this would have on you. Your baby is so young as well, so you never know how you may feel in a couple of years. I think it's not really worth stressing too much about right now. (I know, easier said then done)
As for your husband, I think he would have to feel 100% happy to end up with 3 girls before considering having another. He cant just be thinking 3rd time lucky he'll get his boy.
I fear this may come up for me in the future. DP says definiately no more 2 is enough but i feel like I may want another.
Sorry no real advice on how to resolve this, no ones feelings are more important than the other so I dont know who shoul end up 'giving in' so to speak.

Big again. I hope this doesn't stress you out too much at the moment and that you continue to heal both physically and emotionally from your previous births.