Try layering. Long underwear (sometimes referred to as base layers) is amazing. I get very cold hands when I am outside in cold weather, so I bought some rechargeable hand warmers from Amazon. They are amazing and work very well. You might want to try them.
Amazon has a really nice rechargeable hand warmer, if it’s not against this subs rules I’ll find the link and post it. My boyfriend plays hockey so it’s a MUST to have when I go to his games. Also, my rheumatologist put my on a very low dose every other day of Procardia (a bp medication). I only take it once the weather starts to turn cold and it seems to help. It does make the blood pool in my legs more so then I have to wear compression socks lol. Never ending. Hope this helps and hugs! <3
Edit: here’s the link if anyone’s interested!
KARECEL Rechargeable Hand Warmers, Electric Hand Warmer 5200mAh Powerbank Reusable Handwarmers, Portable USB Hand Warmer Heater Battery Pocket Warmer, https://www.amazon.com/dp/B07FLN8823/ref=cm_sw_r_cp_apip_jXbX5Xg9wG7KC
A phone is a flashlight, and you should have a 5000mAh battery charger because they're dirt cheap and are often combined with other handy devices. Ex: https://www.amazon.com/KARECEL-Rechargeable-Electric-Powerbank-Handwarmers/dp/B07FLN8823/ref=mp_s_a_1_9?ie=UTF8&qid=1549225113&sr=8-9&pi=AC_SX236_SY340_FMwebp_QL65&keywords=hand+warmer+charger&dpPl=1&dpID=41oFaZn8XiL&re...
Currently live in Boston - this comment is 10000% correct and very comprehensive.
I would even suggest getting a down jacket that goes down to your ankles, rather than just knees (if that is comfortable for you - some people don't like them but I love it). I absolutely LIVE in my long puffer during the winter. I have this one. But most important is to get one that covers you butt/thighs though.
Also, I like mittens better than gloves, especially putting these inside of the mittens.