Lisa Niemi
, Patrick Swayze's wife of 34 years, told a women's conference Tuesday that the loss of her husband just six weeks ago "is like an animal all of its own" and the sadness could be felt "on a cellular level." PEOPLE reports that Niemi spoke in a roundtable on Grief, Healing and Resilience at the Women's Conference 2009 in Long Beach, California. Niemi told the attendees, "When the grief takes you, it's like your body is not your own. I'm just going with the flow. I know I have to go through it."