on my butt, I barely touched it and it popped.

Hi, welcome to the ehealth forum and I a glad to help you.
You seem concerned by the zits on various body parts especially the face .
Zits are what happen when the oil glands in your skin get clogged and pus is what comes out when you pop them.
If the wall of the pore breaks, it can become inflamed and red. If it breaks further below the skin's surface acne nodules or cysts can form. Cysts can become infected to form large abscesses.It is important to get these treated, unless of course you want permanent scars.
This is usually due to testosterone (a male hormone found in females as well as males, but in varying amounts), which tells your body to start producing more oil. As a result, the dead skin cells mix with the oil and clog your pores, causing zits. There is no definitive relation with Tri-Sprintec and acne but hormonal changes with regard to testosterone play an important role in acne.
You must consult a dermatologist for the same as the definitive management is not possible online.
Hope this helps. Take care.
Note: This post is for patient education only and no specific diagnosis is claimed thereby