Is it a risk taking 2 antibiodics from the dermatologist for my acne?

I work for a dermatologist and what you are taking is completely normal. Taking two oral antibiotics would be harmful, but your doctor would not ever put you on that anyway. Those two medications are a common combination for acne. Keep in mind that it takes about 4-6 weeks to start seeing results. If you have ANY concerns about the medications you are taking don't feel uncomfortable asking your doctor. That's what they are there for!