I'm no expert in breast cancer waiting times but if you're in England I believe the maximum wait is supposed to be two weeks IF your GP suspects breast cancer and has made an appropriate referral. 

Talk to your GP to check what type of referral was made and maybe to your CCG who may refer you to another NHS Trust which is capable of meeting this standard. "You have the legal right to ask to be seen or treated by a different provider if you're likely to wait longer than the maximum waiting time specified for your treatment. The hospital or clinical commissioning group (CCG) will have to investigate and offer you a range of suitable alternative hospitals or clinics that would be able to see you sooner. If you're not happy with the organisation's response, you can complain using the NHS complaints procedure." www.nhs.uk/.../

Good luck

Dave

Thank you, Dave, that's really helpful. I will get in touch with my GP.

Claire 

I think I read when i was waiting for my partner results that by law it can be up to 4 weeks waiting. Talking from experience, if it is important results flag up and you will get a call sooner rather than later. It is a really stressful time, but try to keep as calm as you can although sometimes is impossible. Sending you love, hope it all goes ok