If you are having several of these associated symptoms, that would be more worrisome for bipolar disease than the mood swings, per se. Mood swings can be present in depression, with swings between normal and low mood. And for someone struggling with chronic depression, a mood swing up to the normal range may appear to be an elevated mood for them. But if the mood swings are between high and low moods, and the periods of high mood also have several of these symptoms, that would be worrisome for bipolar disease.
As for what to do, it is critical that you seek proper medical care. A proper diagnosis requires a more detailed and personal assessment than can be done over the internet. And regardless of whether the diagnosis is depression or bipolar disease, treatment can be oriented towards whichever condition is present.
There is less of a stigma associated with mental health diagnoses than was once true, but to whatever extent there remains a stigma, there will be a much greater impact if a mental health disorder is not addressed and something untoward occurs. Getting a proper diagnosis and treatment is generally a better sign than not addressing the problem. Many people with mood disorders can be managed by their primary care doctor and support staff, although some people need referral, either for counseling or more advanced medicine management.
If I can provide any additional information, please let me know.