Yeah Wadzo it's a common occurrence, usually if I havent planned my decent from a crystal spin by the time visual hallucinations start then i put the dope away and plan how to decend from being spun out to a suitable level where sleep can be achieved without coming down too drastically to cause discomfort. Make sure you take vitamin supplements daily and drink a bottle of water at least every 2 hours if you can remember to, it will in the end help you from reaching a toxicity level that is dangerous. For example you never what to get to a point where you cant digest food and your stomach rejects food when you do finally decide to eat something, this is a lousy and scary place to reach when you are too weak to function and yet your body rejects food to try to strengthen you. You generally either have to wait out the toxic levels or do a manual stomach pump on yourself to begin digestive process again. X) nomad