Sertraline vs trazadone

So I've been taking zoloft for 4 years now ,and it's working well for my anxiety and I've managed to lower my side to 25mg. My problem is every time I refill my prescription, I get side effects like when I miss a dose: wonky balance, fuzzy feeling in my head, warm flushing in my head, etc. So I asked my Dr if maybe u would tolerate another brand better and she recommended trazadone as it's fairly similar. I took 50mg last night and slept for 12 hours. I woke up with really sore leg muscles, and while I did work out yesterday, I'm not normally this sore! I'm worried that the trazadone is going to give me some makes and derail my fitness goals and progress! Should I just stick with the zoloft and ask the pharmacy to order me another brand of generic and see if I tolerate that better?