Thank you everyone for helping,
You can have all those symptoms too and not be pregnant... So It sounds like you probably just ovulated. You will have to wait to find out. No one can tell you if you are pregnant by symptoms.
yes if you are having all of those symptoms there is a chance that you are pregnant. but wait until you miss your cycle to take a pregnancy test.
If you had unprotected sex then of course you could be pregnant. It is way too early to be having any symptoms though. You're not even due to start until the 18th of this month. Wait until then to take a pregnancy test if you don't start your period.