Therapy. Seriously. If it is actual, diagnosed PTSD, then EMDR would work quite well for it. Others find excellent results with CBT/DBT, mindfulness training, or even basic client-centred talk therapy.
No I was sick the past day and today my mom treid giving me a pill so it would get better nut I refused to take it. I put it in my moth and then spit it out while my mom wasent waching. I went to the docter my heart beat is probably 75/120 but I think when it get up it could be a litlle higher than that. Ireall really dont want to go to therapy. I only rtook DXM 6 times in ver low 2nd pletau doses. Is their any possiblility that these are only the side effkest?Physical manifestations of anxiety are anxiety, yeah. That's actually the main way that I can tell when I'm not doing well these days-- my stomach beats the crap out of me, physical tension/jitters, and so on. They used to be far worse, but mostly went away after therapy. YMMV, but it really worked for me.
@Lars-- I've tried everything in the past to try to deal with it myself, but the only thing that gave me lasting relief was therapy. I'd recommend it, but there are some things to be done in the meanwhile; namely mindfulness training and meditation. There are tons of resources around for both of those.
If your veins are popping out, it's likely due to high blood pressure. Systolic pressure (the first, higher number of the two) is very sensitive to anxiety. At my worst I could easily get my pressure to 190/85 or worse. The afterimage thing seems not uncommon, although you might be a bit more susceptible to it than others. The unreal feeling isn't necessarily schizophrenia, but possibly derealization (the sensation that reality isn't real) or depersonalization (the sensation that you're not human or not yourself); both of which are common symptoms of anxiety.
Are you taking any medications/drugs right now?
I hate to say it, but from what I'm seeing it seems like you may have had a propensity for mental illness, and the DXM stressed the mind enough to bring it to the forefront.
It is very important to be completely honest with your doctor, especially if you suspect that you may have schizophrenia on top of the anxiety. The heart issues may be a symptom of the anxiety, or it could just be coincidental, but it'll need to be the doctor that diagnoses you. If you're getting checked in, you will likely be able to have access to a whole series of health professionals, including the possibility of a proper, professional, psychological evaluation.