About 3 months ago (January 8,2016) I had my first and last make out with a guy. There wasnt any penetration at all however his penis went a lil bit inside my vagina for a few seconds and I took it off immediately due to fear of pregnancy I did not want to do it. After this incident, I became worried and stress about what happened to me and started think I might be pregnant since he did not have any protection on and plus the fact that i think im on my fertile days (not exactly sure because my periods are slight irregular. My last normal period was Dec 28, 2016. However, on January my periods became lighter and looked light pink and it came by a week earlier than my expected period (1 day of bleeding with clots and the next several days became spotting). Same thing happened for feb except i got my weird period March 4th instead. My periods were always normal and heavy, it usually occurs last week of every month. And for this month I also got a weird period but extremely light. I am deeply concerned and worried. I have taken types of precautions already Jan-March. I went to my doctor twice and was offered urine test which came out negative. I also did 20+ hpts at home due to being worried and stressed out about thinking that I could be pregnant. Also, I had 3 blood tests to confirm it which came back negative or <2 hcg. But somehow Im still worried due to feeling that my body has become weird. Since January, I felt like my surrounding is moving or the feeling of jetlag or motion sickness. I also have weird sensation in my belly. With all the negative tests that came out, can pregnancy be ruled out completely? I am just deeply worried because of how my periods have changed and the motion sickness, bloating, backache.. etc. I know no penetration means no pregnancy but my body has become weird. I couldnt stop worrying and my motion sickness is not going away? When I went to my doctor about the motion sickness, she just told me that it could be anxiety but did not really went further on explaining it.. Could this be just stress? Please enlighten me. I do not understand my body anymore. 3 months have gone by, can pregnancy be ruled out completely?