Thanks everyone, it went down on it's own.
When you are at the store buying the medication, stop by and ask the pharmacist if its safe, I'm pretty sure it is. My husband gets cold sores and abreva doesn't work at all for him. He puts carmex on it constantly and it usually goes away in a few days. Remember, now that you're pregnant, your immune system is lower so you might get the cold sore break outs more often. Someone mentioned acyclovir, that might be something you would want to ask your doctor about bc it can help to prevent further outbreaks. Good luck.
I've never had one but o believe tea tree oil is good
Been told that's ok to use. Also acyclovier is safe.