I recently worked a 9 hour shift that required a lot of lifting. After a good nights rest I woke up in a sharp pain in my lower back and in my abdomen, at first I thought is just my muscles that haven't been used before but now I think its something more. When I stand up staight I can't move around so well, sitting down takes me about ten minutes and in doing so the pain is horrendous, walking is also much slower and there has been a few occasions where ive needed help. Ive done my Manuel handling many times from prevoius jobs and so I lifted the items perfectly.. what should I do?