Well, so since you've begun your weed break you're still feeling enough anxiety to want to "do" something about it?

Cigarettes have some of that same heart-racing effect, too, but to a lesser degree. They're just deadly to your heart, lungs and body no matter what angle you look at them from. Yes, you need to take a break from those, too. Listen to a words of wisdom here. Take a break from cigarettes and never go back to them. Not because I think they're making you anxious but because hearing that you smoke them at your tender young age makes me anxious. They make an entire population of medical professionals anxious because we already know they'll kill you if you keep them up. You know that, too, on some level. Stop now.

Back to the anxiety. Try getting some exercise. Bike riding. Running. Anything cardio-heavy. It'll help calm you down. And if you do visit the doctor and want to tell him/her about your anxiety and depression, he or she may suggest a pill. You might not rule that totally out if you're truly feeling disabled from your anxiety, but it sounds like just taking better care of yourself and getting some exercise would do the trick nicely.