So I had an exam a few weeks ago and I memorized everything . So I sit in the examination hall and the teacher distributes the paper and I know the answer to all of the questions . Halfway through the exam and I begin panicking

 What if I am not able to pass ? 

What would happen ? 

Can I really do this ? 

And as soon as these thoughts come to my mind then I forget all the anwers . I wasn't able to remember even a single thing .

I had an internal mental breakdown as I try my best to not cry in front of others i succeed in hiding my emotions in the examination hall and as soon as I exit the hall i don't feel anything . Just internal panic . 

When I reach home and enter my room tears begin flowing out of my eyes as I have a proper mental breakdown. 

This incident happened a few weeks ago and now I am remembering this and nearing another breakdown . 

I wanted to ask . Am I depressed ? Is this a sign of depression ? 

If yes then how do I tell my mom that I think that I have depression . I think her reply would just 

 ‘people who actually have depression won't just come up to their parents and say that they think that they have depression’ 

I want to go to a proper psychologist / therapist to figure out what is wrong with me but I don't think that my parents would ever agree to take me to one .

 I really want to know if I have a problem or I'm just making myself think this. 

So tell me do I need therapy or am I just wallowing in self-pity