Almost everybody gets them sometimes – cold sores, herpes, fever blisters, or whatever you like to call them. They are often associated with a somewhat weaker immune system. Because of this, cold sores are more common in pregnancy. The good news is that you have nothing to worry about but an unpleasant sore if you have had a herpes outbreak before, and you are not just about to give birth. You do, however, have to exercise caution with using over the counter remedies for cold sores.
When you notice those familiar signs of a herpes outbreak, it is best to get in touch with your healthcare provider to ask what remedies they recommend. Common over the counter creams that fight cold sores, like Acyclovir or Valtrex and especially prescription drugs are best avoided in pregnancy. More natural cures for herpes, like tooth paste on the spot of the fever blister, or tea tree oil treatments, do not work as well and as fast, but are safer while you are expecting a baby. As always, there are always pros and cons, and they are best discussed with your doctor.