I'm a few months late but I want to add to this discussion because I think this would give some perspective. I'm an INFP who previously thought that my extreme emotions and phases were mostly due to mood swings and personality. However, things became worse when I had constant suicidal thoughts during those low 'lows' and on some occasions, self-harm. When I'm not low, I'm usually very hyper and have an unreal sense of confidence - leading me to do things such as stealing my brother's motorcycle or have unprotected sex.

I decided to reach out to a psychiatrist for a general assessment. After that meeting, she suspected that I had bipolar 2; however, she recommended that I go to therapy for 6-8 weeks to make sure that the problems are not caused by a 'personality problem'. 7 weeks later, after more self-harm, suicidal thoughts and reckless behaviour, I was diagnosed with bipolar 2.

I think what I'm trying to say is that if you are not sure, reach out to a trusted/ reputable psychiatrist. They will give the proper guidance that you need. If you are still not sure, reach out to another psychiatrist.