I feel so off...

Last night, I had an absolutely horrible time trying to go to sleep. I had just driven home from out of town (it was a 5 hour drive), so I was completely exhausted. But when I tried to go to sleep, it's like my entire body decided that it wasn't tired anymore. I woke up every twenty minutes soaked in sweat and my head spinning. I felt like I was going crazy. I kept trying to look up my symptoms to see what was happening and convinced myself that I had a fever, pink eye, and that my antidepressants stopped working since my menstrual cycle is coming soon. I even called in sick to work at 2 am because I was sure I had a fever. Finally, at 4 am, I was sick and tired of tossing and turning. I just wanted to shut it all off. I took a Benadryl and finally nodded off to sleep. I had tons of crazy dreams and ended up waking up at 1 pm today. I didn't have a fever or pink eye or anything. I'm completely healthy (physically).

Today has been a really weird day since. I don't feel like I'm really here. My vision keeps doubling randomly and I get dizzy spells that last seconds. Time keeps slipping away from me, and I keep forgetting what I did today. I feel so fuzzy and confused. I'm dog sitting for my aunt right now, and I'm trying not to be terrified of being in this house alone. I don't know what's wrong with me. My therapist thinks I had a panic attack last night, and it might be happening again now, but I don't know what to do.

I guess I just wanted to know if anyone has any suggestions for me. I know this is the depression forum, but this will be my first menstrual cycle while on my new antidepressants if that has anything to do with what I'm experiencing now. This week is also my finals week which is probably contributing to everything I'm feeling. I just want it all to be over. I want to run away and escape. I just need a break.

I'm so sorry you're feeling so badly.

First off you need to stop researching on the internet your symptoms, it only makes your panic and anxiety worse (trust me, my therapist reminds me of this every week).
It sounds to me like your disassociating a little because of stress. Your mind is basically like WTF and trying to remove itself a little so you don't have a panic attack.
Also if you're starting new antidepressants its completely normal to have dizzy spells, vision problems, etc. for the first couple weeks.

This is a hard time right now for your brain with the addition of new medication, the emotions that come along with being a woman during that time of the month, and the stress from your finals.

Things will get better I promise. In the mean time, try to relax and think about things other than depression and your symptoms. Listen to some soothing music for anxiety on youtube. Do yoga. Watch a funny show. Do breathing exercises!

Just remember that you are strong and you can handle this!