I worry for my relationship with my gf

When we saw each other over the past few years in the long distance relationship we had sex a lot in the first few days of seeing each other then it faded a bit. Towards the end of a 3 week stint of being together the renewed honeymoon period was definitely over. She was normal probably 90 or 95% of the time and just crazily angry for no logical reason the rest of the time, giving out to me for taking photos wrong or not reading up on a tourist attraction we went to together before going.