Dude... chances are you feel as such because your dopamine receptors and serotonin receptors are depleted of the amino acids that keep you balanced, functional, motivated, etc. when you use certain drugs. Although you're only 16, if you have a bank account with a card that has a visa logo, or even some cash... I recommend you try taking 5-htp supplements... or if you have the card... order the supplement Serotune...
http://www.serotune.com/products/serotune... HOWEVER!!!! Because you're 16... only take the recommended dose as a warning... The contents of the pill although are herbal can really fuck your shit up!!! Also, you need to take into consideration your height, weight, and vitals into consideration... If you get the Serotune, take only one pill in the morning... see how you feel... if you start going back to drowsey, don't want to do anything, hangoverish like feeling again, then take only one final one in the evening. The max dose recommended on the bottle is 3... and for a person that is 6'0, weighs in at 225, with a blood pressure average of 142/90 and a sitting heart rate of around 90bpm... I started with one, and it worked fine... then when my body got used to it, I now take one in the morning, and one at night.
My fiance would take the 5-htp supplement after he rolled (when he used) to not feel shitty the next day. Depending on what you use (reply with a list)... I'll give you my personal recommendation on how long after your last dose to wait before taking the supplement.
Good Luck