I am 47 and have Mirena last 4 years. In the last year I started getting some peri symptoms such as mild anxiety and exhaustion. Went to gp and it was agreed I'd start transdermal patches. I started on 50mg of estrodot and they worked great energy and mood back to normal. Last time I went for prescription pharmacy switched it to evorel because of supply issues with estrodot. Past couple of weeks I've been having sleep issues and noticed anxiety creeping back in. Could the change in brand be a coincidence or could it be causing the return of these symptoms?