My psychiatrist refuses to change my medication/increase the dose

I started taking Lamictal a few months ago for my bipolar. I’m only at 150mg. I think the medication has made me worse. My mood changes are more extreme, during my depressive episodes I won’t eat for days and lose motivation to do anything, i think about kiling myself a lot , and i’m becoming more violent (punching holes in the walls.) I also cut myself for the first time in 5 years because I felt like I had no other way to release my anger. At first I thought maybe my body had just adjusted to the dosage and needed to be increased again, but I was never this bad before starting the lamictal. Originally he gave me the options of lamictal or lithium, but I was nervous about the lithium since I have only heard bad things about it. At my appointment today I told him about everything I included in this post, and his exact words to me were “how does a medication make you worse?” I asked if I could maybe try the lithium, to which he said no to because “it’s probably not the right fit.” I then asked him if he could increase the dosage, to which he said “if it’s making you worse, why would you want to increase it?” After my appointment I left crying because I felt like he wasn’t taking me seriously and almost mocking me. I’m scared to even go back to him, but he’s the only practice close to me (which is still over 45 minutes away) that accepts my insurance. I already feel like my friends and family don’t understand my condition so it really hurt me when a psychiatrist acted like he didn’t either.