A question about my bike?

[Assojette]

I'm wondering if anyone can help me. When cycling I find my handlebars don't 'feel' straight, and thus I'm getting pains in my left shoulder and elbow (pins and needles type discomfort). I feel I'm putting more weight on the left handlebar than the right. I've tried fiddling round with them but just can't find a comfortable position for my handlebars.

Anyone know what may be causing the feeling of my handlebars not being straight? And how to rectify this?

I cycle to work everyday so it is important to get this sorted as I'm sure it is not good for my posture.

P.S. Don't say go to a bike shop - I intend to go, but want to get people's views on here first.

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