To be able to give an opinion on if what you are experiencing is bipolar II, it is important to understand the course of your symptoms. It is important to understand since how long you've been experiencing these symptoms, how long each episode lasts and what exactly do you experience when you say euphoric.
A manic episode may typically last for between 2 weeks to 4-5 months. Depressive episodes take longer, around 6 months. Along with the time period, the severity of the symptoms you mentioned requires evaluation to exactly say if you are suffering from bipolar II. These symptoms can also be a part of the mood fluctuations you experience in Borderline Personality Disorder.
Since what you mentioned is indicative of clinical significance, I would suggest you get evaluated from a clinical psychologist or a psychiatrist who can psycho-educate you and guide you towards treatment. I understand that you live in a small city with poor access to help. However, you can write to me, and I can try referring you to a mental health professional.