I have been sick for 2 monthes now, and my most recent diagnosis was for Pelvis Inflammatory Disease and a cyst on my left ovary. Since I started taking the new antibiotics yesterday, my symptoms are worse. I have pain and a feeling of fullness and swelling in my abdomen. Every now and then I get sharp pains. I hope the new prescription just needs some time to kick in. But I am scared and if anyone has experienced this, please respond to this post.