A new research has found that consuming antibiotics during the expecting months does not raise the risk for most birth defects, leaving some exceptions.

Some commonly used antibiotics during pregnancy like penicillin, cephalosporins and quinolones and other widely used antibiotics were not associated with increased risk for about 30 different birth defects.

The study however, found that two types of antibiotics were related too higher risk of several birth defects. These two antibiotics are nitrofurantoins and sulfonamides also called "sulfa drugs" which are usually prescribed for urinary tract and other infections.

As per an Associated Press report, U. S. Centers for Disease Control and Prevention, paid for the study.

This was the first time that a link was established between the use of certain antibiotics to treat urinary tract infections in pregnant women and birth defects.

An unborn fetus can be severely damaged by bacterial infections therefore the use of antibiotics is encouraged in pregnant women.

The researchers said that their study should lead to a discussion between doctors and patients about treatment options and not result in an end to use of antibiotics during pregnancy.