Is this normal for a teenager?

Lenalollipopsious
I don't know why but I've been sick for like 3 months now, slight fever and a slight cold. For some reason I'm not able to eat at meal times like breakfast, lunch and dinner but can eat little snacks without losing my appetite or puking up. For some random reason I cry at random times for no reason and I think about something a lot. I feel empty inside as well like really empty and I'm not able to smile and laugh that much anymore it feels like I'm sinking on a boat at times. People think this is some stage of a teenager, some think it's depression but I don't think so. Anyone know what's wrong?
Updates
+1 y
Ahahahaha no need to worry those who gave their opinion. I really appreciate that you took time to share you opinion. I sorta have good news in a way the doctor just said it was stress so no need to worry, nothing major.
Is this normal for a teenager?
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