My mom is insensitive?

Ok so my first love first everything broke up with me almost two weeks ago. My mom has been so mean. She wants me to just get over it. I've actually been pretty positive but every once and a while i get into a little depressed state (for less than a day) and she basically tells me to think of everyone around me and to get over it. Because shes "just sick of it." Why does she expect me to just get over someone who was prt of my life for two years. I get she hates seeing me sad but jesus shes just being so mean. Im 18. She basically thinks im ruining her life along with mine. But like im trying, i am trying and she doesnt get it. Idk what to even do. Shes making it worse