After masturbation, I went to the bathroom and when I wiped there was blood

hello dear , their might me just tiny injuries from bating with fingers might b fingernails or hard parts of the finger itself , it is not big issue just keep in mind very good and trimmed clean fingers , just to b safe clean ur fingers b4 and after u bate , and alil of advise try to keep some time gaps between each time , so u dont stress ur mucels , but it is up to u in that part ,

be safe I hope it is an answer for what u ask for sincerely Rena