it is not suggested what you could do is call the salon i which you will have the services and ask if they have a recommendation or cut off period they suggest to pg women. My personal opinion about perming is DONT DO IT i had a perm 2 years ago and my hair is still not the same unless you plan to style your hair the same way for a long time dont do it. You cant straighten or dry your hair because it just damages it and my perm made my hair lay different so if you part your hair be prepared it may not look the same. I almost pulled a britney and shaved it all off!! lol evryone warned me before but i did it anyways and i still regret it!!
I wouldn't perm it, because all of the extra hormones and other stuff going on in your body could cause it not to take well, or take to well and you will be left looking like a fuzz ball.
I colored my hair my entire pregnancy. You shouldn't do it in the beginning, but in the end is fine. Just stay in a very ventilated area.
I honestly dont think you should do this its fine in the first trimester but its bad for you to breathe the fumes in while being that far along and plus its all chemicals that can be harmful to your baby. Most hairdressers wil deny service if you are noticably pregnant. Sorry I think you should wait!