This is really the last symptom i’m having and it’s fucking with me bad and i need to know what it is

It’ll start with my body getting uncomfortably warm, and then my eyes will start to droop/feel heavy/feel dry, my heartbeat will feel strong, my eyes also get hot, and sometimes the feeling of general sickness and unwellness comes along with it. I’ve taken my blood pressure during these episodes and it except for last night when it was a little high, the results have come out perfect. Does anyone have any idea what’s going on with me? These episodes are really uncomfortable and happen 1-2 times a day. I’m pretty sure a few times while thinking about it it’s happened so maybe it is truly anxiety? Idk i’m just looking for someone who has felt this. Been cleared by doctors and cardiologist and all but this just feels horrible. And i’ve been feeling this for a while now. I have GAD and i’ve had it since January and my body seems to have finally calmed down but then i have this. Help please