I self harmed after not doing it for a year...

I’ve started taking medication for my generalized anxiety disorder but my routine keeps changing this I forget to take them at regular time. So my schedule is off and it’s causing my anxiety levels to rise. So my grades are plummeting, my anger is bad, I had a panic attack yesterday, and had the urge to self harm and did today just to get rid of this stress that’s making me feel like I have no control of my life right now. I’m just glad I didn’t cut like I did a year ago...I just used a rubber band and caused a lot of redness on my sensitive skin. But it’s still not healthy I know. But I have no way to calm myself down and I don’t have enough money for therapy due too tutoring and my tuition being high...😣 I’m terrible when I’m stressed...