hi, my wife got skin allergy from last 1 week and she is 6 week pregnant now, in initial stage she had avil, but she didn t get relief, now she is taking avomine and rantac 150 medicines twice a day as per doctor advice, and she is getting relief also, is it 100% safe during pregnancy? pls advice, and how many day she can take this medicine? is there any harm to her and baby?