BF4 not saving any of my progress in multiplayer

I played 4 matches of obliteration and then 4 matches of domination all on hardcore. When I left the match after t was over and joined my friends game I noticed my loadouts were different and when I attempted to chage them back everything was missing. I went to the main menu and checked my unlocks and it showed I hadn't unlocked all the gear I lost. Also, I went from level 7 to level 6 an the last 4 games I played didn't even show up. I lost my scar-h, V-40 mini, stinger, defibrillator, and all attachments to my AK12. So when I log onto battlelog it doesn't show those 4 games in my history and shows the same stuff I just mentioned. However if I go to soldier and then stats and then full report its shows all my unlocks that I earned and how many points and kills I had so I don't get it. I want everything I earned back. It takes awhile to level up and unlock stuff and I was the best soldier in 2 of those games and had great performances so this really discourages me from wanting to play this game anymore if it takes away my unlocks.