Today at work i got really dizzy and felt like i was going to pass out and sweaty clammy could it be my blood pressure or sugar dropping?

Yes.: What you described is near-fainting (near-syncope). It can be caused by the low blood pressure associated with dehydration. It can also be caused by a very low blood sugar. Occasionally, these symptoms can be the result of an inappropriate slowing of the heart rate while ones blood pressure is very low; such a reaction is termed a "vasovagal reaction".

Can be either or els: It can be either of low bp, or low blood sugar and there can be several other causes as well so check with your doctor to find the cause and treatment.

Possibly: Dizziness and sweaty/clammy skin may be a sign of an allergic reaction, heart problems, anxiety, electrolyte imbalance, internal bleeding, low oxygen levels in the blood. A viral infection can start with symptoms like you had. Check with a local doc about anemia and to have them listen to your heart : often it is hard to find an explanation, but if your menses have been heavy, anemia is likely.