Suggest Treatment For Swollen Bottom Lip

I woke up with a swollen bottom lip four days ago. I went to the doctor two days ago and they said it was a fever blister that hadn't come through. They put me on acyclovir and now blisters are popping up all over my lip and it has swollen to an even bigger size. They said the medicine would make the swelling go down but it hasn't seemed to help. What should I do?