help me!

So me and boyfriend had sex 27-29 of October (it was between those days). I got caught up in the moment and let him cum inside of me, as a symbol of trust? Anyways. Yesterday I thought I had my period because when I went to the bathroom a brownish discharge spotted my panties and since regularly women have them before their period starts, I thought it was normal. I went to the bathroom to wipe myself clean and it came out clear, no stains on the toilet paper. Later on I went to shower and wore a pad since I was so sure I was on my period( although my period is 12 early- i thought) and went to bed. Next day, there was no stain on the pad and I wiped myself over and over again to see nothing but clear discharge. It's been like this all day and I'm starting to worry. Websites tell me it's a sign of pregnancy or something like that. I need help, what does it mean?