I’m pregnant now and i’ve been pregnant before (had abortion last time…never ever ever do that, seriously!!) You sound like you are pregnant…really. You have all the immediate symptoms. The reason you bled for that one day and lightly, because it was implantation bleeding…that’s when the embryo (ball of cells, soon to be a baby) burrowed deep into your uterine lining, which is blood-rich and causes bleeding on some women. Look back and figure out exactly when your last normal period was. If you had sex between 11 and 16 days after that day, you are most likely preggo. ESPECIALLY because you’ve been getting all these obvious symptoms out of nowhere…do the math. IKNOW you’ve heard this crap a million times, but go get a pregnancy test…first response, it’s $13, it’s the most accurate test out there and if you are, don’t worry. I’m 19, my bf treats me like crap and yet i’m keeping this child no matter what. Single mothers are strong, dedicated and independent women. I was raised by a single mother, i had a good childhood…reguardless of what soceity tells you, they have no right to tell you that you can’t do it, cuz i know you can , just like i can….babies are not a burden, they’re beautiful and being pregnant is wonderful…so CONGRATULATIONS…If you need any support , reply me Good luck! hope i helped~