I can't remember if i took my nightly dose of zoloft (sertraline). i take 150mg at bedtime every night. i am experiencing lots of pvc's currently and am anxious. ?

Don't double-up: Try to find a more fool-proof method to remember your medication, but do not take another dose unless it is only a few hours late. Missing one dose should not cause a problem - you have lots in your system from earlier. some (most) of the symptoms you felt so soon were psychologically based - it's the opposite of the placebo (nocebo). Both are quite powerful! You can take today's a bit early.