jasmine5, have you taken any Utrogestan yet and if so, how much? You say you are using two pumps of gel everyday but when did you last use any progesterone? I would be surprised if you had any breast pain with just the Oestrogel.
You can easily take the gel through UK security, I have done it many times, you simply put it into the clear plastic bag and you don't need to show a prescription or letter from your doctor.