very confused

Im a 40 yr old mum of three kids. I also have severe depressive bipolar. Last year two lumps turned up that turned out to be sebaceous cyst.  After 6 months of trying to get rid of them I was offered surgery. I had a mammo and ultrasound.  The bottom cysts was vesticular and the radiologist sais it looked angry. Then the recalled me for spot mammo but nothing showed up. Then I had general breast clinic. Last week I had the sebaceous cyst removed from my left breast after surgery no dr came to see me and no one said the surgery went fine. I was just told I have a breast clinic appointment this wed and I went home. On friday I got my appointment but it is for the breast clinic in the olivia newton john cancer Center.  Now I dont want to work myself up but I thought if I had first app in normal clinic why am I now going to other clinic. Scars are 5 cm long I was told they would be smaller than 1cm. And I have wat looks like a biopsy puncture site. My friend who is a cancer survivor said they may have just biopsied to check. Now whilst we wrre talking I mentioned another lump that is hard and doesn't move. She had a feel and said I should mention it at my appointment on wed. so my question is should I b worried.