What are the methods to overcome increased heart rate from substance intake?

Hello doctor,

I am a 25-year-old female who is 6 feet tall and weighs 260 pounds. I have severe anxiety and paranoia as a consequence of my use of meth. I am not in pain or anything, but I am quite worried. My pulse rate is 130 bpm, and my blood pressure is 160/80 mmHg, according to my wrist monitor. My resting heart rate is normally 88 beats/minute, and my blood pressure is usually 125/60 mmHg. I take Zoloft 150 mg, and Buspar 30 mg, and I was supposed to take Seroquel 50 mg for sleep, but I rarely do as it exhausts me till the next day. Normally, I only take cocaine once every three months, but I was unable to find any this time, so the dealer gave me Meth instead, which is how I acquired it. I have a 1 mg Xanax, but I am not sure whether mixing it is a smart idea, and I do not want to put further strain on my heart. Should I use Aspirin to reduce my heart rate? Would that be okay?

Kindly help.