Hi Dnester,

My impression is that you feel the entire sexual experience as dirty or shameful in some way. Your body fluids, and especially the other person's body fluids, are very symbolic to you of this dirtiness or shamefulness. And given what we know about the spread of STDs, bodily fluids are what most often spread infections or viruses, but in your case it symbolizes the spread of the dirtiness and shame you are feeling towards sex and maybe towards your own sexuality.

My advice is to focus on understanding your feelings towards sex in general, and realize that your body fluid phobia may be distracting you from being aware of a bigger issue here.