As I'm sure you know there are risks involved. Which could be low birth weight, smaller head than the body, however, there are woman that have used daily and had a perfect baby as well. It's good that you have stopped, although you have used, you have not used a lot. Which some woman who do use a lot may even have a miscarriage within the first couple of months.
At this point, you really need to let your OB doctor know this. Let him/her know you have stopped,etc. and do not plan to use. Since you just found out you were pregnant, you will have an ultra sound shortly which will show how the baby is doing, size etc., and will have much better idea of knowing if all is OK. since you have used such a short time, withdrawal symptoms won't be there for the baby. Plus as I stated above, there are even plenty of woman that use illegal and prescribed medications during the first few months because just as you, didn't know they were pregnant. So this is very common.
So just be honest with your doctor so you and the baby can get the best of care... and your doctor will be able to help you better.. But don't worry about it at this point. As long you watch what you do from here on out, you and baby will be fine.
Best of luck Hun and congrats. 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.