I had sex with using condom with my girlfriend on 23rd april and she got periods on 25 th april. Now again we had two times on 21 and 22 april. But now she is saying that she is feeling nausea and slight headache right after dinner. So I am little bit confused if she is pregnant or not as she is having no periods. Am giving her periods details .as periods on 1.dec 29 2. Jan 2 3.feb 11 4.mar 25 and now she has no periods .what shall I do please suggest me. I also did a home pregnancy test and it is negative. What should I do .am so nervous. Please suggest me urgently.