Can i experience withdrawal after using tramadol 10 times in 3 weeks, but at high doses (350mg).. experienced mild toxicity last dose, and discontinued use. 4 days since discontinuation, and still feel symptoms (mild nausea,anxiety, no appetite?

Your symptoms are possibly related to over-use of Tramadol. The dose described is significantly about the approved and recommended dose. Your symptoms should slowly improve. Some may be related to narcotic induced constipation - if present, you can seek standard remedies. If your symptoms are not trending better in the next day or two, please seek a medical evaluation and blood testing.