Metoprolol Tartrate and high blood pressure

They had me on a 600mg dose to begin with, which I cut way down to 200mg daily.I have high blood pressure and tachycardia and it does lower all that quite well. However, I am scared to go to bed at night, because I wake up shaking like I'm having seizures, I feel like my whole body is twitchy. Leg cramps, ringing in my ears, vomiting, nausea, dizziness, hot sweats, cold sweats, dark spots on the wall, (my blood pressure was normal), thirst, panic and anxiety, not caring about life or the house or bills, and horrible dreams, no appetite, then increased appetite, insomnia,and this all started about 3 days into the meds. Let your body adjust to it, yeah, it's getting worse so we'll see.

I've been taking Metoprolol for moderate high blood pressure since July2007.
I've been dealing with weight gain....nightmares....sleep disturbances and more within weeks since I began.
I wasn't sure what was going on with me.
I'm 55 and attributed all this to some sort of midlife crisis or something psychological.
I've contacted my primary care physician and will hopefully have an appointment within the next several days.
In the mean time I was told to STOP taking the medication and that he will assess my BP and alternative meds when we meet for my appointment.