Has anyone ever had symptoms in a cycle?

After a period of stress and anxiety that lasted for about 4 months but was extreme in nature.

I am now stuck in some kind of cycle, where every other day it starts with tinnitus and a weird twisting feeling in my stomach and then proceeds to a full day where I feel like my body may explode, the pressure or tightness is in my head, chest, stomach, back. My legs and arms aren’t too bad. Unsure if it’s my muscles, my fascia or what but it’s very uncomfortable. It doesn’t ease off for a second until the day has passed.

I am doing CBT to manage my anxiety but it’s unlike anything I’ve had before. It doesn’t seem to be triggered by an anxious thoughts day for example, it just seems to be a set time of day, every other day where it starts. On the 2nd day where it’s more normal, I get a few aches and pains but it’s like my body is trying to recover from the previous day before it starts again.

Has anyone ever had symptoms that work in a cycle in this way?

I had it every day for a month but it then turned into the cycle I’m in now and I don’t seem to seeing any changes or improvements anymore so my resilience is feeling low. I haven’t met anyone who can relate to what I’m describing?