Rash and undetermined lump?

I’m 18, yes I know the risks are highly unlikely and I may just be paranoid, but I have recently acquired a small bumpy red and itchy rash on my breast ( it had started on one and has now spread to the other).
I’ve tried creams and changing clothes but it hasn’t gone away.
I’ve also noticed small ‘holes’ slightly resembling an orange peel. Now this may be nothing as they are small and not that noticeable.
Also, if I lift my left arm, my left breast looks as if it has a bump or lump towards the top. I’ve felt it and can’t tell if there is anything there as I’m not sure what it should really feel like.

Thanks for reading, I’ve been wondering about this for a while.

Hi Paige and welcome to the BCC forums
In addition to the support you will find here please feel free to call our helpliners on 0808 800 6000, lines are open 9-5 weekdays and 10-2 Saturdays

The following link will take you to the BCC ’ Worried about breast cancer’ information where you will find lots of information and support ideas:

breastcancercare.org.uk/worried

Take are
Lucy BCC