Okay... antibiotics are actual harmful to your body.
I first went on something, then tetracycline, then minocycline, and I just stopped taking my newest one.
I had great results with all of them for a little while and then it wore off. :/
They are harmful because they get rid of bacteria while they do infact get rid of the bad bacteria that is a cause of acne they also destroy vital GOOD bacteria. When there is not enough good bacteria that your body needs to fight the bad bacteria off naturally then it becomes an environment where bad bacteria will thrive, thus creating more acne.
Yes it will get worse before it gets better in your case, but then most likely you will be like me and after maybe 4 months or something you will start breaking out again.
Instead of antibiotics take something that will ASSIST your body in fighting acne. Take Probiotics and garlic pill. It should help, as well as investing in a good cleanser, a tea tree oil one perhaps.