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!
Do not take misoprostol to prevent ulcers if you are pregnant or plan to become pregnant. Misoprostol may cause miscarriages, premature labor, or birth defects. If you are a woman of childbearing age, you may take misoprostol to prevent ulcers only if you have had a negative pregnancy test in the past 2 weeks and if you use a reliable method of birth control while taking misoprostol. You must begin taking misoprostol on the second or third day of your menstrual period.