@nicole_kelly , the dizziness could be an MS symptom, or it might be something run-of-the-mill like an ear infection. If your eyes aren’t “behaving”, this could throw everything out of kilter.
Are you able to get to see your GP about this? You should also mention the heartbeat problem, even if it has been resolved.
If your GP draws a blank, then call and discuss what’s going on with your MS Nurse.