Was I right to defend myself?

I just want to know if I was right for saying this, I want to be an ob/gyn (the doctor who specializes in women and pregnancy...) and everyone my friends and family always make fun of me for it and then I was sent this by one of my friends and it was just a little bit much especially since he knows how I feel about it. Here lately he’s been saying things to me like I’m stupid which doesn’t seem like much to others but I grew up being put down constantly so i don’t want it from my friends.

***he said “I don’t feel like reading that right now so okay”