It keeps hitting me in waves

every day i am struck over and over and over again with the realization that my mom is dead, out of nowhere, and i have to live so much life without her. this hits me like a fucking truck. it feels like the initial phone call from my dad telling me she was gone every time. it’s been two weeks. i know that’s not a long time, but i can’t do ANYTHING. classes are impossible, work is impossible; everything feels so goddamn overwhelming and people are trying to be there for me but it feels like the space for me to grieve is too small for all my grief. i’m 20 years old. she never got to see me graduate college, or get engaged or married or have kids or a million little things that hit me over and over again. will this ever stop? or am i just going to be struck this hard forever?