 [ Symptoms ] small black spot on side of tongue pretty far back black spot on lower gums black spot on side of tongue that is small painless have a black spot on my lower gums same side of mouth been have neckaches and headaches should i be worried [ Disease ] according to medscape a one time use of zzzquil is a very low risk to your child it is in pregnancy category b which means bmay be acceptable either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk 