My first time

I just recently lost my virginity to a guy friend. We have known eachother for going on a year. Prior to loosing my virginity people always thought something was going on between us cause we'd be always seen together,hanging out. I will admit we are rather crushy on eachother. We started playing around a little over a month before we went all the way. I feel like an emotional roller coaster though. One moment I'm up the next I'm down. My body aches and I have all over fatigue. I even find myself thinking and acting motherly in a way. Like I'm now more aware of my surroundings and reality. I am rather young. Just turned 20 years old in February. We did use protection and I honestly have no regrets loosing it to him. Glad I lost it to someone who I know and not a complete stranger like most girls do my age. I waited and lost it to someone who means the world to me, my friend. l admit he is twice my age though. Not sure if the things I'm going through are because of that. However, is it normal to be going through what I am going through? I really do feel like my whole mindset and body has shifted gears completly.