Good to hear the one cyst is simple and the other is very small. So hopefully it will also resolve on its own. The size of ovaries is variable so I wouldn't think he difference is size is a concern. And the size difference may be explained by the cysts.
Your symptoms are fairly typical with ovarian cysts. Most cysts go away on their own in 2 to 3 cycles or months. Being in perimenopause, it may take longer since you are not having regular periods. But I have read that cysts can even develop after menopause but even those tend to go away on their own so I would not think being in perimenopause increases your risk for needing surgery. The ultrasound report should say the size and suspected type of cyst which should dictate next steps such as monitoring with periodic ultrasounds or surgery. I believe 7cm is the cut-off due to concern of ovarian torsion.
Keep us posted on what more you find out.
Ovarian cysts can certainly cause hip and thigh pain. I have experienced both with my cysts. Do you know what size the cysts are? Often simple functional cysts will resolve themselves, but because you are in perimenopause and not experiencing regular periods, I am not sure. In most cases, ovarian cysts are benign, but larger cysts, complex cysts or ones that are causing pain may need to be removed. Often, they can do a minimally invasive laparoscopic procedure with a shorter recovery time and very small incisions.
Good luck at your appointment next week! I know that waiting can be hard. I'll keep you my thoughts!