Body jerks and twitches all over. 4 weeks on Zoloft, 50mg. Anyone else?

Hey guys, I've been on Zoloft for 4 weeks now and it's been two days since small twitches all over my body have started. I don't want to panic just yet, and I saw that Zoloft has muscle twitches as a side effect. I have them all over my body and every 1-2 minutes (not on mouth or tongue though, mostly arms, legs, hands and sometimes head).

Anyone else has this and, frequently too? If you did and no longer do, how long did it take it to go away? I want to know if it's common for Zoloft to do this so frequently, before I go to the ER about it. They're just twitches and don't hurt, they last milliseconds. But they are bothering me and concerning me.