Docs are taught that the normal time period to grieve for the loss of a loved one is six months to a year after the death. So it may be natural to experience depressive symptoms during that time. But we also want to make it clear that you should never feel pressure to shake the pain after a certain time period. Illusions are also a part of normal grief. An illusion is a misperception of an actual external stimulus. Delusions or hallucinations are never normal. The key is getting to the point where you can weather the discomfort enough to carry on with other aspects of your life.