Advice on how to not fear LSD will cause something in me

This has been a recurring thing with me and LSD I have noticed... oftentimes a big part in the trip becoming hard for me personally has been thinking a bodily sensation or a thing that happens is somehow linked to LSD causing or showing a disease I haven't been aware of or just causing some complication in general.

For instance I had heard that LSD can cause urinary retention in people, and this shit was all I could think of during a certain part of a trip last year, panicking I would need to call an ambulance and get a catheter or whatever.

I suppose this extends further, into the crux of the question, what if I will severely injure myself during a trip? Its something I tend to think about often, and I realize its got a pretty simple answer, that you likely won't if you just don't let yourself, but I don't know. Like how does going with the flow even work, like letting go of holding onto the past, I think if I want to get the most out of my trips in the future I need to answer that.

I realize I'm basically asking shit that should be asked in therapy and therapy only but what can you do.