Is there something wrong with me?

yes those are signs of pregnancy but you should know that you ovulate 15-18 days after the first day of your period. what was your period like? was it really light and shorter then normal. If so this could have been implantation bleeding not your period. If it was normal and you got pregnant after it then you wouldn't be feeling those signs right away, but a small % of women say a day or 2 after conceiving they know and get signs of pregnancy. Then there's always the chance that your not pregnant and that you are stressing your self out to the point that you are having false pregnancy signs. wait to see if you miss your next period. sound like it should be coming up soon. If you miss it take a home pregnancy test. If you can not wait till then to find out go and see your doctor and ask for a blood test. It will show the pregnancy hormone soon then a pee test will. hope this helps. and good luck.