i can really relate to this anonymous person on the internet

My anxiety is really bad already but ever since I’ve quit smoking its made it worse like really bad stomach a mess always feel like I’m dying always sweating tired all the time weak and a lot more but the thing is my anxiety hasn’t gone away I felt like I’m living in a dream world not really here just feels weird I don’t do drugs or drink but I always feel like I’m in a constant high that never goes away and my heart is always racing and I just can’t take it I’ve been to the doctor the said I was fine so I probably am or they’re just idiots but someone help. Should I try Paxel or something?