I am pretty sure that Canesten is ok during pg... But you can just go see your pharmisist and they can give you a pessary, much more effective than just using the cream.

I wouldn't use the Canesten you have there, you should only use it if it is sealed... if someone else used it then you could make the bacteria worse. Also make sure it is for thrush and not the canesten that is for Tinea...

Hope this helps...