Some medications cause problems for the baby, others are just fine during pregnancy. As Kelly said, see your Dr. immediately. He or she can work with you to ensure you and your baby are healthy. Good luck to you.
Okay, you are pregnant and have not stopped taking the meds you are on. First, contact your Dr. immediately and let them know your dilemma. I can't say "stop the meds" because I have no idea what you are taking and why. Do not go for an abortion, seek medical help.