I have a list from my midwife with all the over the counter medications that is safe for us to take while pregnant. The things on the list you should use only occasionally and as directed.
For aches and pain = acetaminpohen (tylenol extra strength, anacin 3)
cold= robitussin dm, benylin expectorants, sudafed, chlor trimeton allergy tablets or benadryl tablets, vicks vaporub, cough drops
indigestion/gas pain= maalox, rolaids, mylanta, gaviiscon
diarrhea= kaopectate or donnagel as directed
constipation= metamucial or citrucel, dulcolax or colace (sometimes)
i hope this helps, it helped me alot.