i recently bought a pussy pump not maybe having done my research! anyway it turned up today so obviously i wanted to test it out well what a disappointment it way to big so i couldnt get suction ive tried every position i could think of i managed once but it was also sucking my bum hole out ive tried for so long ive made myself a bit sore! im of slim build and didnt know they came in different sizes am i not doing it right or is it just to big! ive orderd today the doc johnson pump so hoping its a better fit! any advise on pumps would be great