The signs and symptoms of acute inflammation: Redness; Swelling; Heat; Pain; Loss of function; All the above signs may be observed in specific instances, but no single sign must, as a matter of course, be present. These are the original, or cardinal signs of inflammation. Functio laesa is an apocryphal notion, as it is not unique to inflammation and is a characteristic of many disease states. *Full article available from Wikipedia
This information is just provided to give you piece of mind, as it is best to avoid the topical-use of retinol-containing products during pregnancy. It is the oral-administration of retinol that has been proven to cause severe birth defects. Please let us know what the company and your doctor says!
Certain birth defects can occur when women take Accutane in the first 12 weeks of pregnancy. Accutane is taken by mouth, while Retin-A is taken as a cream. In general, the less Retin-A that is used on the mother's skin, the less likely there will be risks to the baby. Many reports claim that the use of Retin A cream is not associated with pregnancy problems, but there are some reports of an association with fetal malformations. (Camera G, Pregliasco P: Ear malformation in baby born to mother using tretinoin cream.