MRI - how long for results?

Hi. Having found an indent in my left breast, I was referred to breast clinic. My consultant can feel minimal thickening but no lump. The ultrasound was clear as nothing showed up on it. My consultant has scheduled me for a MRI on 14Sep to try to find the reason for the indent. He told me he isn’t look g for cancer since ultrasound is clear .He said if the MRI is normal he won’t see me again and will write to me but if there is anything that needs discussing he will request to see me again. Does anyone have any experience as to how long I may wait to hear if all is ok? And if something untoward does show up would I hear fairly quickly?
Thanks x

I was initially today 3-5 days for results. But my dr called within 12 hrs to get a biopsy scheduled.