You know, I read "What to Expect When You're Expecting" and followed it to the T. I didn't eat anything it said not to, and yes, lunch meat too, soft cheeses, anything unpaturized, etc. That book scared the heck out of me, and I know that our moms ate, drank, and smoked their whole pregnancy, and their babies were fine, but SOMETHING COULD HAPPEN.
My baby was GREAT! He was almost 8 pounds; needless to say, I needed a C-section because he wouldn't fit through my pelvic bones, but it was all soooo worth the way I took care of myself when I was pregnant, I wouldn't do anything different!
He was such a GREAT baby, slept through the night at 7 weeks and 6 days and never looked back. We were able to take him to restaurants whenever we wanted, of course if he didn't sleep, you'd have to pay attention to him, but he was good.
Anyway, I recommend doing what you're supposed to and not doing what you're not supposed to, an taking good care of yourself. I also gained 50 pounds while I was pregnant, but I quickly lost it, too. It's sooo worth it !
I'm sure you know ALL of this since you already have 3, but maybe SOMETHING in this response can help, he he!