Thoughts on Venlafaxine

I have never taken any kind of anxiety medication since my anxiety is mild most of the time. Recently working a full time job, a part time job and opening my own business + state of the world. i have been anxious and stressing to the point that my hair is falling, i get random dizziness spells and then fully disassociate while runing errands and in crowded places. My doctor prescribed Venlafaxine, but all i can find about it is how hard it is to get off of it, weight gain and no one actually talking about a positive aspect of it. Kinda scared to take it. Should i talk to my doctor about changing it or give it the old school try and see.