According to the list that my wife's ob doc puts out of approved medicines for pregnant women:
1st trimester safe:
1.) tylenol, xtra strength tylenol ( head-ache pain, fever reducer)
2.) robitussin, robitussin dm, benedryl (cough medicine)
3.) ocean spray and afrin nasal spray (sinus congestion)
a.) benedryl (sinus congestion/allergy relief)
b.) sudafed (after the first tri-mester only)
4.) tums, rolaids, mylanta, maalox, pepcid, and zantac. (heartburn)
these meds are safe for use along with many others for nausea, constipation, diarreah and sore thoat. Please let me know if you want the other pars of this list. I would be happy to post the rest of it.
There are also several narcotic pain meds tat are generally safe for use durring pregnancy. Tylenol #3 or #4, vicodan/lortab, and percocet/tylox.
Those meds should only be used when prescribed by your ob doctor.