Anyone know what kind of headache is the throbbing one behind the eye? It's not a migraine, I get…

Anyone know what kind of headache is the throbbing one behind the eye? It's not a migraine, I get those often enough to know it's not that bad, those put me down completely with vomiting and auras, dizziness and face numbness. Having light sensitivity and some nausea too. Chugging water, and took some Tylenol 15 minutes ago but no relief yet. Really need it to go away. Slept fine last night, got a collective 7.5 hours total until Henry was up for the day and waking up a few times to nurse Violet. Been drinking water constantly too to help with breastfeeding so I'm sure it's not dehydration.