Is it depression or something else?

Anonymous
I am an 18 year old girl. I can't get out of bed and can't concentrate on my studying. I am trying but I can't. I am a freshman at university and I am trying to make friends and find a boyfriend (I never had one and I really want one). I am an ambivert with introverted tendencies and shy. I don't have confidence and I get easily dissapointed. When I tell my mom I think that I feel I have mild depression she says that I am just lazy and grumpy. Sometimes I feel happy and then awfully sad. I also feel lonely and tired to do anything.
Is it depression or something else?
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