beta blockers

I have been on Metroprolol 25 mg(once daily) for over a year. Lately I've been having a feeling of a lot of pressure in my head. I saw the Dr because I had had severe pain in my back and left arm. They did an EKG which he said was normal. At the time my blood pressure was very high, but my meds were due to be taken soon, so I figured that was why. He also said the pulse in my right wrist was low. He changed my meds to Bystolic 10 mg (one a day) but the next day and for the next week, I was having a moderately severe pain in my spine, right behind my heart, but not radiating. So, he switched me back to the Metroprolol. Now the head pressure is back. What other drugs or type of drugs would be good to try. Should I ask to be seen by the cardiologist? We have HMO insurance so I would need a referal.
thanks

[grammy57]

I forgot to mention, I am 51 year old female with a strong family history of heart problems. My father died of heart problems at 60, his father was younger when he died of heart problems. I also have 2 prolapsed valves (but not severe) and a hot spot that shows up on my stress tests, but nothing found when they did a heart cath about 7 years ago.

[Jack54]

See the posted FDA warning on generic Generic Toprol XL, or Metoprolol Succinate ER.  Consumers have experienced increased blood pressure, increased heart rate and ectopic beats, as well as side effects such as nausea, dizziness and headaches from this generic. Call your prescribing doctor...

Best,

Jack