Waiting on referral to breast clinic

I'm Ellie, and I'm 18 years old. About early January, I found a lump inside my breast which I'd say is about 1cm big, I got it checked out at my doctors, and the doctor said whilst she initially found it difficult to find, it does feel like a 'mass of tissue'? She referred me to the breast clinic in January, but it's almost April and I've still heard nothing about even going. I feel as if it's attached to the tissue, and whilst I was confident it was smooth at first I now feel like it feels like it has a slight edge on one side if that makes sense which absolutely terrifies me doubled with the fact it's painless, there's been no physical changes on the outside of my breast so far though.

 

I understand I'm not making any sense whatsoever but I'm terrified which is only made worst by the fact I haven't heard anything else regarding my appointment and whilst I know you shouldn't Google these things it's hard not to, I live alone, and I hate bothering my mum but I'm utterly terrified and at this point, I'd rather know if it was cancer or not so I could look at my options or finally breathe for once in the past three months. I also stopped getting my period for about two months which could be normal, but doubled with this is scaring me horribly.