I am 20 years old, studing medicine and i am confused wether i face bipolar disorder or is just the fast and tiring rythms of my life that makes me feel like that.
Should i try any medication, see a psychiatrist?
The symptoms are the following:
1.some times extremely energy, extremely happy, fluency, humor, thinking fast (nobody can stop me) may say things a little be extreme that normally i wouldn't.

2.during the night, when i go to sleep (some times) I think that my life is not so important (not having intension to suicide).I feel depressed (I dont know the reason) and some times cry without a obvious reason.(never in front of others, only happens when i am alone) It may takes me for hours until i finally sleep.
Not every night happens that, usually happens every one-two months and it last for some days, maybe a week. ( i repeat, that only happens during night)

3.Although i am feeling down, if someone calls me my mood instantly improves.

4.Don't face problem communicating with people.

5.Lack of sleep(not having a fixed sleeping program, the sleep i get differs dramatically from day to day), tireness in the mornings, energy in the afternoon (even if i haven't slept) or feeling tired all day long even if i have slept many hours.

6.Instant alternation in mood.People I found interesting and pleasurable in a minute they no loger appear to me interesting or pleasurable and after some minutes the condition reverse.

The first time I experienced those symptoms as a teenager at the age of 16, after falling in love with one of my schoolmates (didn't tell her) but although years have passed still remains.
Can the state i experienced as teenager detonate a bipolar disorder already existed beneath but didn't until then come to the surface?

Should i worry about all these stuff or is it normal and it happens to all people from time to time?

Should i try any medication?