You should always speak with your doctor before taking over-the-counter medications. The specifics of your health history or pregnancy may make certain medications unsafe for you.
This is the list of over-the-counter medications generally considered safe for use during pregnancy:
• Acetaminophen (Tylenol)
• Diphenhydramine (Benadryl
• Loratadine (Claritin)
• Pseudoephedrine (Sudafed)
Read all packages carefully. Many over-the-counter drugs contain several different ingredients.
I hope that helps, please post any questions you might have!