I'm too sensitive as a person?

My mom says it's about time for me to become a grown woman and stop focusing on the wrong things. She says I think on the wrong things because I'm too sensitive about everything. I feel like I'm too sensitive that's why things that has happen in past still effects my feelings and my mind... I was bullied in highschool was told I need stop being "scary" & "weak" ... When I try to tell her my feelings I'm being to sensitive and I should have just stood up for myself and it seems like everyone does that to me. that I'm being to sensitive or just being dramatic ... I just want my feelings to be heard . It hard to carry something alone when alot of people gather together just to Target me .