it is possible that you are pregnant, but it is still a but too early to confirm pregnancy
with a test as your last period was only 19 days ago on the 7th. it is also a bit too early to attribute the symptoms that you are experiencing to pregnancy, as they usually don't start this early. it is more likely that it is caused by hormonal
fluctuations and your cycle. so for now, you should just wait until you would expect your period, and then you can take a pregnancy test. I hope this was helpful, please let me know if you have any more questions.