On 1st April 2014, in the night, I had unprotected sex. During the process, I thought that perhaps he ejaculated inside as I felt wet (it could have been my own orgasm or urine). I immediately broke the contact of his penis with my vagina. He then asked me to give him a blowjob and showed that nothing came out of his penis. I continued giving him blowjob, his penis was still hard and after almost 2-3 mins, he ejaculated. I saw it. Now, just to be on the safer side I m thinking I should use some pill to prevent pregnancy. Is it necessary in my case? I m 23. And I m in the fear that if I do use some pill, it could do some irreparable damages.(I have never taken one & i don t want to). And if I m wrong, what pill do you suggest and when shall I take it? Secondly, I already missed my periods in march due to some hormonal disturbances(haven t taken any medicine for it, just waiting), will taking a pill in any way worsen my situation or delay my periods more or abruptly start bleeding, pain ? I had my last periods on 22-23 Feb.. Missed in march. And I have mankind prega news kit, when is the right time to take the test?