I know when I increased my oestrogen I was jittery for a few days before it settled down. Some women do seem sensitive to changes, as Sheila says maybe a gentler increase may work.
Unfortunately anxiety is a huge part of peri and meno for so many women. So you aren't alone in feeling this way ( and never feel you are at fault or weak, it's bloody hard and distressing sometimes)
Get ready for your appt on Monday, make some reminder notes so you can tell them how you feel and not forget any questions you have, this can help you feel a bit proactive and taking back a little bit of control over how you feel
I assure you many of us have felt like you do. X