I had 6 drinks of alcohol yesterday and smoked 3 joints of weed. I went to stand up and started walking and suddenly felt faint and dropped to the ground. My head was dizzy and I had to lie there for 5 minutes before I could get up. I also felt cold and sweaty. I stopped drinking alcohol and smoking weed. About 1 hour after this I started feeling anxious about what happened and my heart started racing, I felt cold, my breathing felt tight, I felt dazed like I wasnt experiencing reality. Overall I was completely scared, these feelings lasted about 30 minutes but have left me shaken and anxious since. I forgot to mention I was diagnosed with depression, anxiety, panic disorder about 3 years ago. Thank you for your time and I appreciate any advice or insight into this.