While I was pregnant with my son I made certain both with my OBGYN and my specialist (have a blood cot disorder that often causes pregnancies to result in miscarriages) confirmed with me that it was fine to take my regular dose the entire time I was pregnant but never in increased amounts. Of course, it is always best to ask your dr. Pregnancy is a wonderful time and you should not have to worry about that hormones affect us all but no more then the next woman and definitely ask a licensed professional but as I said both of my drs recommended I continue my medication while I was pregnant and my son came out beautiful and healthy.