I used to have regular cycle of 28 days. I had to have an ipill for contraception last to last month. Last month I had periods on 9th may. Had unprotected sex on last day of menses Had used a condom on the mid cycle Date was supposed to be 8th June for periods but it's been 3 days, no sign of periods And on 11th June there is evidence of whitish discharge I'm currently under medication for vit B12 deficiency (levels were low in the lab findings) but haven't taken the medicine regularly since one month The pregnancy test was conducted on 2 occasion on 10th and 11th but the result came out to be negative. Please advise.