Is what I'm feeling normal?

I've begun to notice that things aren't as amazing as they have been in the past. I went through a really rough time when I was about 9, and I lost touch with myself. I've hated myself since then and only in recent years have I begun to trust my body and my mind again. I lost 70 pounds in the past few years, I didn't let myself fall into the thoughts of hurting myself, I brought myself back. But I'm still stuck in a limbo- like state. The only word I can describe it as is numb. I feel numb to the world, I'm not as excited ever, I can't differentiate being exhausted from being angry or sad or anxious. Everything is bundled together in one big group of emotion. And sometimes there's a complete lack of feeling and I shut down entirely. I don't want this to affect my life or my schoolwork I don't even know if it's a real issue but it keeps me up at night and im kinda terrified of myself and my thoughts, or lack thereof. Things don't feel /right/. I can't bring it up in front of my parents because they shrug it off and joke about how I "make things up." I'll say things about my childhood like how i used to cry at school because I had no friends, and they'd laugh and call me a liar. It hurts when i realize that they didn't know things like this because I bottle things up even at such an early age. Should I get therapy? I dunno man everything hurts and I don't want to feel this way. I'm 16 I want to live happily.