hi, this morning while standing in line to get lunch my stomach starting hurting all of the sudden then starting seeing black spots all around me, felt like i was gonna pass out, i ran to the bathroom and ended up vomiting. I ve been weak ever since and can barely walk, and my stomach hasn t stopped hurting. i can feel everything spinning around me even when laying down, also been shaky all day. should i be concerned? should i head to the ER?