i would not suggest that you "squeeze" undiagnosed skin lesions. unfortunately it is not possible to make a blind assumption as to the nature of this lump based solely on your description so you will need to see your medical provider or a dermatotogist for a proper examination.
i have a lump that looks like a bruise but it is filled with blood. it bleeds and will not heal. it on my butt/thigh. i'v had the lump for a few month. it will get smaller and then will fill with blood and open a tiny pin hole and bleed. it got bigger when i tried popping it blood sprayed out it was very red in color(the blood).