Help!!! Hormonal or something else?

Maria

I suddenly noticed all these bumps on my back and they don’t seem to go away… does anyone know what it is? The only things I could think of were:

I shower to hot

I am about to get my period

Friction?

I was on antibiotics last week.. does that affect it?

I usually don’t use any products on my back, sometimes some body lotion. My back is usually pretty clear besides a pimple or two.

I’m very desperate so help would be appreciated 😢 thanks!!