Anxiety/constant internal tremors???

hi everyone,
i want to know if anyone else has experienced this, i started taking sertraline for my anxiety in feb 2020, after 3 weeks i started getting internal tremors (couldnt see but could be felt like all the inside of my torso was buzzing/contracting) it was the most uncomfortable feeling and i cried myself to sleep every night, i started halfing the tablet then stopped but the tremors never stopped? theyre id say 80% less bad than what they used to be but are very much there, its a very distracting uncofmrtable feeling. my doctor didnt even know tremors were a symptom and had to google it in front of me when i told him :smiley: has anyone else experience this? i want to feel reassured, thank you!