There have been a few posts lately where people are asking if their HRT is working or not, or feel it's not. I appreciate it's not great if you want results.
The medical advice is to review after 12 weeks. It's too much to expect a huge turn around in days or a week , for most women.
The website of Dr Louise Newson has masses of info, from simple factsheets on HRT to more detailed podcasts and interviews with medical experts. Well worth a look if you're struggling or unsure of something.