Well you sure are showing what may be symptoms of pregnancy, although it really is too soon to tell.
Try not to think about it so much (i know it's hard) so that if you are going to get your period then you will get it on time. Otherwise you might make it late from thinking so much about it.
I am saying this b/c I know of women who wanted to get pregnant so bad that they had all the symptoms of pregnancy and even missed periods and then after a couple of months they got their period and were disappointed.
Try to take it easy and not stress out. As for now take care of yourself and start eating healthy just in case you are pregnant and then take a pregnancy test a few days after the time you are supposed to have your period. Also, since you think you might be pregnant then, you should stop taking your birth control pills until you see if your period comes or not.
Good luck!!!