This is the classic problem of many addicts way of thinking, while I'm certainly not saying you're an addict since I have no idea who you are, never saw you, saying that you want to do it means nothing. Once a drug takes over your thinking you're absolutely sure that it's YOU who want the drug and not vice versa but in fact the drug has already started to take over your rationality. By the time you realize you actually need the drug, it has already caused so many problems to you...
What helps is asking yourself objectively: Would I consider someone else who takes these amounts I do now some time ago an addict? If the answer is yes, you'll figure out it can be problem, but if it's no theres still chance the drug forces you to think what it needs.