I don't have a problem skipping coffee because about a month in until after the birth, coffee repulses me. It's so weird because I love it so much normally. I try to avoid artificial sweetener, esp in the first tri. I ate a ton of Quiznos subs when I was pregnant with my DS because it was the only thing that sounded good but since they heat it, I figured it was fine. My OB said he doesn't really stress the deli meat thing..just as likely you'll get random food poisoning from other things too. But that's just his opinion. I've never stopped eating peanut butter but we have ZERO nut allergies in our family.
I dyed my hair with both pregnancies, just didn't in the first tri and then told my hair lady who made sure to keep it off my scalp. With my first, I dyed it darker and with my 2nd I was lightening it significantly. The smell of the dye made me nauseous though so I would space them out as long as I could stand.
Ashley, I'm the same with coffee. Love it normally but can't drink it from early in on in pregnancy, if it's not making me nauseous then it's causing the most horrible heartburn so I am not tempted.