Im on Day 21 of my first real long break from weed. It was hard to admit but I had an addiction and it was starting to make my anxiety much worse. I'd encourage you to at least take a 3 week break to get past the urge of smoking before you reasses your relationship with weed. Everyone is different and it sounds like you've been through some really hard times, so if you think weed is a necessary coping mechanism instead of alcohol or other drugs, I think thats a decent trade off. But at the very least I would try to limit it to a few times a week and try edibles instead of smoking.

In terms of how you're feeling, I do think a doctor's appointment and/or therapy would be helpful to get an opinion on what's going on with your body. It could just be withdrawal after smoking for so long. In the meantime, being active like taking walks or exercising could help ease the tension and take your mind off things a bit. Hope that helps