3 YEAR OLD FEMALE, OVERWEIGHT TEACUP POM. LAST 3 DAYS GOES ALL STIFF HEAD & NECK AREA. WALKS ABOUT WONT SETTLE. 2 DAYS THOUGHT WAS IN PAIN GAVE ANTIINFLAMMATORY AND WAS FINE ALL DAY. 2DAY COMFORTED HER AND HELD HER, PASSED AFTER 10MINS. PLEASE HELP NOT SURE IF IT WILL BECOME WORSE - SHOULD I TAKE HER TO VET?