Coping With Nosey Family Members While Pregnant

Ok, I would first like to state that I love my family, including in-laws' from the bottom of my heart, but I am finding it to be extremely difficult to deal with there non-stop opinions. 

Well, I am 5 months pregnant with my second child and never have i been so annoyed with certain family members.  With my first child I did not show until I was about 6-7 months pregnant, but with this one, I am popping out as if I swollowed a basketball.  And those certain family members?  Well, they don't forget to remind me of that every single day.  It is so frustrating!

My mother in law is determined to pick out the name of this baby.  < NOT GOING TO HAPPEN!
My father has turned into a certified nutritionist over night and wants to tell me what to eat/what not to eat, what to drink/what not to drink and how I am gaining too much weight with this one. <ANNOYING!
And along with all of this, they all think they are Miss Cleo and can predict when the baby is going to be born.  It's just overwhelming at times.  Does anyone know what I am going through?  Please give me some suggestions.