I need your opinion...

My husbands grandma is here she's sweet but very pushy, always wants her way... She's always making her own plans.. For example. She told my husband to invite ALL his friends when the baby is born to My house for a "Welcome baby party" (my husband hasn't mentioned it to me yet, I overheard them talking about it this morning... shes loud) all he said was OKAY GRANDMA I WILL! But I don't want a party at my house w/my newborn... I don't even know half his friends & having alll these ppl around my newborn.... Its risky especially w/flu season & im sure they're or some are sick & babies immunity is low! I wanted to be alone w/him & the baby for a while though I appreciate the thought of a party... But im also gonna be recovering... Idk what to do but im gonna be extra pissed if my husband doesn't tell me about it! What would you do or say? -Thanks