As long as you are not going to have anymore, you will be fine. Keep in mind that a lot of woman do drink, use illegal and prescribed medication as well, prior to finding out they are pregnant. It's once woman find out they are pregnant, if they continue to do things that can be harmful. So this is very common and woman who no longer drink, use medications etc, have a healthy baby. So for the amount you had etc, don't stress over it. However, I would still bring it up to your OB doctor, just so he/she is aware.
Best of luck and congrats on the baby too. Hope this helps, If you need anything else please feel free to ask. If you found this helpful don't forget to click the *ACCEPT* button and leave *POSITIVE* feedback.