These random bumps appeared this morning

Hi I have these raised bumps this morning. Singular raised bump on my arm. When I squeeze it there's nothing.  And also a few random raised flesh colored bump that is quite big about half a cm patch? And I have no idea why. Can someone help? 

These are some photos of them. 

I'm worried I have HIV. But I don't have any other symptoms 

Moderator comment:I have deleted the links to the images as they went to a site unsuitable for inclusion in the forums. Users can upload images directly to this site by using the icon at the top right of reply boxes.

Does it itch?