hi sir/madam
I have gone through your question and understand your concerns.
In my opinion, i feel that your suffering from
fibromyalgia with depressive episode rather than fibromyalgia alone. I see similar cases many a times.
Regarding treatment with
gabapentin, gabapentin has got nothing to do with suicidal ideas and
depression. It's recommended dose is 900-1800 per day. So, your still in safe zone pertaining to its side effects.Its most side effects are minor like ataxia, fatigue, daytime somnolence which are dose related.
In my opinion, I would recommend you to start tablet
pregabalin 150 mg three times a day for fibromyalgia and SSRI or SNRI drug to take care of your depression.
Non pharmacological management include graded
exercise therapy (GET), massage for trigger points are mostly choosen for fibromyalgia and cognitive behavioural therapy for depressive episode.