I had sex and noticed that there were was a white liquid on my leg and I didn't put much attention to it. So I went to get birth control. But before that I got my period but it was really light . Now it's been a month and I've been having all the symptoms of pregnancy. Can I be pregnant??

There are no "signs" of pregnancy, in the first few weeks, the first real sign is a missed period.

But yes there is a possibility, and birth control after sex ( except morning after pill) will not help in the past. You will have to wait for this coming month and see if you have or miss your period