based on your description of what happened, it is possible that you are pregnant. it would be a good idea to take a home pregnancy
test just to make sure. however, there are other possibilities as well. sometimes minor hormonal
fluctuations can cause these types of symptoms due to stress
, illness, weight gain or loss, medications or many other things. usually they will resolve on their own in a few weeks. if this persists, you should see your doctor to figure out what might be causing this problem.
I hope this helps. please let me know if you have any more questions.