Sick and tired of being sick and tired..

In my world these days, its always something. Either im sick or taking care of a sick loved one. I live my life one day at a time but at some moments in the day i just think is there even going to be a tomorrow? Me and my family just found out that my mom has cancer and its stage 4, and treatment isnt an option at this time, we found it to late. After my sister passed away i thought our lives were hard enough.. well apparently not, because god put this big rode block in the way again. Like i said ifs not one thing its another. I dont know what i would do if my mom passed away, shes my bestfriend, my mom, and most importantly my role model. Days go by and i just sit and think of what could happen at any minute in time.