actually if you still have discharge monday go and be seen. get properly tested for yeast and bacterial infections. odds are this is vaginitis and not a std but if you are concerned, you can get tested for gonorrhea and chlamydia anytime after 1 week post encounter. syphilis after 6 weeks. herpes and hiv after 3 months.
grace
Hi
The worse thing it COULD be is indeed an STD, (herpes, gonorrhea, or chalmydia).
The condom broke so you did put yourself at risk, HOWEVER, I honestly don't think you have any of these as you partner uses condoms. Other things it could be is BV, or yeast infection (not STDs per se).
if this doesn't go away in 5 days, go see an OB/GYN about this.