I Have An Absessed Tooth, And I Am In A

i have an absessed tooth, and I am in a lot of pain. my face is also swollen. I had a deep cleaning on Monday, and I have a yellow greenish bruise on my right lower jaw. they cleaned only the right side of my mouth, I got scared and took half of a levoquin 500 mg tablet. I am very allergicto most medications. please help me. I am so scared.