Can my testosterone hormones dissapear?

Randomly. I'm in love with this girl and for a month too. Then tonight I still am and then randomly I have no feelings for her. Also, other girls don't seem hot or anything. After losing my love feelings in literally seconds... I'm feeling sick to my stomach. I need a good answer on this one, will I get my emotions and feelings back? Also, this may not be appropriate, but I can't get a ***** either! No matter what I do, which makes me think it's a hormone problem, like maybe they just dissapeared????

I'm feeling sick from not feeling anything for my girlfriend and I can't sleep. Will these feelings come back overnight??? It's literally like my hormones dissapeared in seconds! I'm scared.