Advice needed-Not sure what to do?

Hi All, 

Don’t really know if I’m being paranoid or it’s something I should get checked, but could really do with some advice. 

I am 39 and always check myself, usually every couple of weeks, I’ve always had one breast slightly bigger than the other, and different nipple heights, but in the last week or so I’ve noticed a significant change in the size and if I’m honest the weight of my left breast. 

This has always been the bigger of the two, but it is pretty noticeable both in feel and sight. It’s not painful, there’s not any noticeable skin changes or discolouration but it has come on suddenly and feels heavier 

Mo had a partial hysterectomy 6 years ago, and only my ovaries  and cervix remain, so I know it’s not to do with periods, and I’ve no other symptoms. 

I don’t know if it’s something I should get checked or if it’s just something I should wait and see if it goes down? 

sorry if that’s a silly question but I’d rather hear from people who’ve experienced similar rather than end up down a rabbit hole of dr google! 

thanks 

Jenny x