Suffered From GAD. Prescribed Fluoxitine And Propranolol. Experiencing A Strange Buzzing Sensation In Head. What To Do?

Question : I initially suffered from GAD in 2005 and weaned off 20mg of fluoxitine about 6 years later. Out of the blue my GAD came back and i have been on 20mg of fluoxitine and 80mg of propranolol since XXXXXXX 2013 (my Dr had prescribed 40mg of fluoxitine but in 2005 I felt it was too much and it was like living in a bubble so I just took 20mg. I was signed off work as the anxiety and side effects were unbearable. 3 weeks ago I was signed as fit to work from home and although I was much better I was experiencing a strange buzzing sensation at the front of my brain (almost like my body trying to have an anxiety attack but the tablets stopping it).

8 days ago I increased my dosage to 40mg and annoyingly my anxiety has returned, although it is to a lesser extent compared to the side effects of me going from zero fluoxitine to 20mg, I do not know how I managed to get through that transition. I understand that by increasing to 40mg my anxiety levels will be heightened for a while, and I want the fluoxitine to work as I have already been out of my office since XXXXXXX

For the past 2 nights as I have been falling asleep I have experienced strange visual hallucinations could the increased dose be causing this?

For the past 8 days I have taken 20mg of fluoxitine and 40mg of propranolol in the morning on waking and 20mg of fluoxitine and 40mg of propranolol before bedtime.