I masturbated on my own way and every time I was ejaculating, but that stopped now

i am 16 i have been doing this thing since childhood where i lie down facing towards the ground i move my hip i used to get pleasure from this i dont know how i got into this ive been doing this for long after a certain age i started ejaculating fluid that i then realized is sperm and i realized that this is not supposed to happen while doing this it should happen wen i give my penis a hand job but now wen i give my penis a ha****b i feel nothing i dont even ejaculate but wen i do that thing everything is normal and i also ejaculate and also there is pleasure but i think this gonna affect my sex life is it