Losing your vision is scary...

I went out tonight to buy some groceries, carried them up the stairs to my apartment and got in the door and immediately felt the cold sweats. This happened 2 weeks ago but i was told it was from a new medication which they told me to stop taking. i sat down on the bed and felt so sick, trying to take deep breaths in to calm myself, then my vision went away, everything was a white blur, i didn't know where my phone was but i managed to find it but then realized i couldn't see to dial 911. i banged on a couple neighbors doors but got no answer.. finally my vision allowed me to barely see the numbers so i could call. paramedics checked me out and my blood pressure was low again like last time cept i didn't faint this time and crack my head off my desk. i opted to go see the doctor in the morning rather then spend hours at the hospital, but my god.. first i fainted 2 weeks ago, then my vision disappears like that, scary stuff, i wonder why my blood pressure is going so low now, ive always had slightly high blood pressure.