dont squeeze. it brings a risk of secondary bacterial infection.
wipe it if there is anything to be wiped and let it be for few days, without squeezing and touching. most pimples, even if they are healing, need a day or two for swelling and irritation of the tissues (that have been squeezed
that's a lot of pressure!) to go down. it's normal.
if it gets infected you will know - it will likely get bigger, more red, warm, and it will hurt (a lot). if that happens go back to vet for medicine for that (topical or oral antibiotic depending on severity).
it's also possible, that even if clean blood is coming out, there is some clogged pore debris inside. if that's the case, in a day of two it will get closer to the surface and you will be able to clean/gently squeeze it out (clean hands!!
) the best think you can do now is just let it be. skin has amazing properties to heal and get rid of pimples and zits