A little worried

A have been referred to a breast clinic following a doctors visit 3 1/2 weeks ago. I woke up one morning with blood on my bed covers coming from one of my nipples. 3 1/2 weeks later Im still bleeding. I have gone from being initially worried to thinking it will be fine, back to worrying again following another significant bleed last night. 
I have now got an appointment next week, I’m scared of the outcome but relieved I’m finally going to see someone. 
Has anyone had this problem & had a good outcome? 

Thank you!