A ‘comedown’ may be experienced by anyone who takes ecstasy, whether they are addicted or not. This is more like a hangover that may persist for a few days after using the drug. You may feel nauseous, weak, anxious, depressed, paranoid and suffer from insomnia. Ecstasy withdrawal, on the other hand, refers to the symptoms experienced after dependency on the drug has taken hold and occurs due to the absence of ecstasy.