I had intercourse with my boyfriend of 1 year about 4 weeks ago and it was right after my menstrual cycle..but after that my stomach has been looking odd and making weird noises. for a while i was barely eating and now my eating habbits are back to normal but my stomach is still a little on the odd side. could this be a sign of pregnancy? I took a pregnancy test and it came back negative it was around 12 in the afternoon when i woke up and took it.