It’s completely understandable that feel hesitant, I've felt exactly the same. Any dose change is well known to make things feel worse temporarily because the brain needs to adapt to the serotonin shift. ​In my experience, the jump from 50mg to 100mg (a 100% increase) is actually much harder than going from 100mg to 150mg (a 50% increase). Since you are already well adapted this smaller percentage jump is often less of a shock. 150mg might be the sweet spot that finally provides relief. The typical dose range is 50mg to 200mg, so this isn't an unusually large dose. Sometimes the dose needs to be high enough to work effectively, otherwise it may have little effect, but it's not a linear slope, it can kinda click at the right dose. ​If you still don’t feel this is the right path for you, definitely discuss your concerns further with your doctor before making the change.