I rub my hand against a pt bed sheet that is hiv pos undectable viral load . something wet got on my hand too late for prep . really scared .

Anxiety over HIV: This doesn't sound like a true HIV exposure, although I can sense your anxiety. It's always good to talk to a health care provider if you have concerns. What counts in your favor here is 1-the source patient had undetectable viral load, 2-HIV dies when outside the body, and 3-you did not report any break in the skin. Thus your chance for acquiring HIV from this incident is zero.