Sheesh - my pharmacist said not to take it in the 3rd trimester! The warnings that come with Polaramine also say not to take it in the 3rd trimester. So personally I wouldn't take it.

Think I've quoted this in a few threads now LOL..

Do not take POLARAMINE if:

• You have an allergy to POLARAMINE or any of the ingredients listed at the end of this leaflet.
Some of the symptoms of an allergic reaction may include skin rash, difficulty in breathing or faintness.

• You are taking a medicine for depression called a monoamine oxidase inhibitor (MAOI) or have been taking it within the last 14 days.
Taking POLARAMINE together with a MAOI may exaggerate the effects of POLARAMINE and cause a severe drop in your blood pressure. .

Ask your pharmacist if you are not sure if you are taking one of these medicines.

• You are in the third trimester of pregnancy or are breastfeeding unless you and your doctor or pharmacist have discussed the risks and benefits involved.

Newborn and premature infants may have severe reactions to medicines like POLARAMINE.

Do not give POLARAMINE to children less than 1 year old without medical advice.
ETA: when I saw my GP early in pg, she looked it up, and all she could see was that it was category A for pregnancy.. which is the 'safe' list. But when I went to the pharmacy to get some a little while ago, he said it was a big no no once in the 3rd tri, which is what made me look it up myself, and I found the above.