The medicines you have taken are not sufficient to prevent all the STD's but don't worry about it as most of the STD's are curable. And you need not feel shy to consult your doctor in any case and if you are worried if he will reveal your information to others let me tell you that he doesn't have the right to do that. Then if possible you also get yourself screened for HIV
and Hepatitis B
, and then once you find out that you are negative to them, take vaccine
against Hepatitis B which you have to take at 0, 1, 6 months intervals total of 3 doses. And the most important advise is that always practice safe sex
, use condom during sexual intercourse to protect yourself from getting any of the STD's and don't take medicines without doctors advice.