Hi I'm Experiencing Painful Burning In The Back Of My

Hi I'm experiencing painful burning in the back of my throat after taking lamictal. I've taken lamictal before and have been taken off of it. Now my doctor represcriibed it to me again and I worked my way up again to 200mg. I took equetro 300mg, lamictal 200mg, 100mg of Zoloft. And 10mg of flexirel all at the same time. Should I be concerned??