Anxiety help

my anxiety has been weirdly bad lately. I had what felt like an anxiety attack the night of Christmas eve and ever since then, every night, I feel another attack coming on and I have to calm myself down. I have never experienced anxiety this much before and I don’t know what is triggering it. I have social anxiety that I deal with every day but I’ve never dealt with full on anxiety attacks like I have been recently. I’m going back to college soon and I really don’t want to feel this way at college and don’t want to have anxiety attacks when no one is there to help me. I just don’t know what to do and can’t stop freaking myself out. Anyone know how to deal with/help this?