I did go to a clinic after first flare up. I was already feeling better, they checked me, didn't see anything unusual. Took urine, vaginal test... Doctor felt my ovaries, didn't seem too concerned.
Perhaps, I need a more thorough examination.
One more thing that happened in between these two flare ups. I had Aura Migraine without headache (first time in my life). I don't know if it's connected.