Can hiv be transmitted through little amounts blood splashing on a pimple? the pimple had most likely scabbed over and was in the healing phase?

This is zero risk. HIV is ONLY transmitted by sex or by serious blood exposure, like sharing drug injection equipment. Without these, you can be sure you will never catch HIV.

HIV transmission is not possible in above circumstances, check cdc.gov for reliable information regarding HIV transmission. Would suggest talking to your doc about your health related anxiety and ways of treating it or dealing with it.