13 weeks and miserable! Antidepressant??

M

I’m 13 weeks today and feeling so tired, emotional, nauseous and headaches. My mood has been up and down and today my Dr said this is all normal but maybe I should start an antidepressant. They prescribed Zoloft. I’m wondering if any of you experienced this around the same time during pregnancy? I have an anxiety disorder in general and so I worry and fear the worst a lot. Reassurance would be so helpful. Thank you!!!