Hi, I Had Unprotected Intercourse On New Years Night. My

Hi, I had unprotected intercourse on New Years night. My partner did not ejaculate but there was quite a bit of precum the next morning I went to the bathroom and discovered brown discharge in my underwear. My period is scheduled to come on the 9th-11th. On the 9th I experienced light cramping at the bottom of my abdomen, I was tired, bloated & way more gaseous than usual around midnight I start experiencing light thin bleeding. Can you tell me if this is normal & is there a chance that I am pregnant?