Will there be a child birth defect if the father is using medications during ?

You and the child will be just fine. Birth defects from medications have gone a far way from even 5 years ago. Just read any pamphlet that the medication comes with and the side effects are right there. You also have the advice of the pharmacist and the doctor that wrote them. When you think of having a family you need to take every precaution, understandable. You also have a computer at hand so use it and do some research. This should be a reason you bought it for. Then you can be perfectly relaxed and stress free when you go into making your beautiful baby. Take the time saved for doing fun things like picking names and so forth. Good luck and God Bless