Maybe take a look at the various types of hrt too, tablet form, patches,gel or spray. See what may suit you best, if you need progesterone, as CLKD mentions, what form may suit too, and discuss this on your appt. It seems fairly common that patches and oral progesterone seem to be suggested a lot.
Be prepared that it can take a fair while for your body to adapt to hrt, and in some cases you may feel a bit worse at first. Have a good browse on here and I would definitely take a list of your questions in with you. It can be a bit of trial and error,what suits one woman may not another, but despite me taking a while to get things right am so much better on hrt than not.