Easy for GPs to dismiss us all with 'mental' problems but that so Victorian!
Have you been offered an anti-anxiety treatment? I found taking a beta-blocka daily helped enormously and I have an emergency pill to take when it over-whelms me.
Sometimes ladies require HRT alongside anti-anxiety and/or anti-depressant medication to improve over-all health balance. Despite what some on here might think! But I go with experience of mental health issues since 1989.
Cortisol can wake the body with a jolt in the early hours. Adrenaline for me feels like hot water coursing through my veins

. Appropriate medication has helped, otherwise I wouldn't be sitting here.
Maybe keep a diary and review after 3 weeks, you have something to take to your Practice Nurse or GP to discuss. If necessary take someone with you?