You're not overreacting. As adults, its me we appropriate to put your hands on another person. My AH grabbed my arm and twisted it and I was advised by a police officer friend to call and report him. At first I thought I was overreacting and being dramatic because he didn't "hit" me or "beat" me but getting physical in an aggressive manner is NEVER okay.
Good for you for having a plan to get out. And if he ever shoves you again, please call the police. Hugs.