Breast thickening with aching

[mumamuma]

So about 2 months ago I noticed that my left boob was a little achey. I often get this just before my period so put it down to hormones etc. Anyway, my period had been and gone and the ache was still there - not getting any worse but not getting any better.
I have very bad anxiety, in particular health anxiety. I was trying to be as rational as possible because I’m aware that my brain instantly goes to worse case scenario every time.
Anyway, I recently noticed that my left boob felt thicker and harder than the right. I started to spiral and turned to Google which has convinced me that I have breast cancer.
I made an appointment with the GP today and was examined by a nurse. She didn’t seem particularly concerned, agreed that there was thickening but no obvious ‘lumps’ and referred me on the 2 week rule to the local cancer clinic for an ultrasound.
I’m so scared. I’m 29, have two young kids whom I love more than anything in the world and I’m not ready to leave them.
I’m just looking for reassurance, maybe people who have had similar symptoms and been ok?
Thanks in advance

Had this for about 10 years - never seen a doctor, so I guess I'm fine! Strangely, I mainly notice it last thing at night.

I have lumpy breast tissue. It was checked out on a mammogram and it was fine - a 2cm benign cyst that I can feel and lumpy tissue. The reason I pushed was that I felt the breast was different although in retrospect I had been going to the gym so it was probably muscle but always good to get things checked, you know if something feels a bit different, plus I have it in the family, but it was nothing to worry about.

I used to suffer achy boobs so took a high daily dose of evening primrose oil, was recommended by a friend, asked GP who said most women benefit from taking it. It really helped me, if I stopped taking it, aches would come back.

I have the same in my right breast. I noticed it about 2 years ago and went along to the breast clinic for it to be checked out. I was told all was normal and I have just have dense breasts. I keep an eye on it for changes but apart from changes with my period it has remained the same. I also get painful breasts, had this checked out a separate appointment and again all was fine.