Pregnancy test

hiiiiii I'm so confused at the moment I came of my period on the 7th of January me and my boyfriend had intercourse on the 8th, I started bleeding on the 17th (blood spotting) it was only for a day or 2,im not due on my period till the 4th of February but I've never had bleeding in between or irregular periods,I took a test today I think it is too early it came back negative can anybody help me and give me some info am just stressing out wanting to no if I am or not,I've had a few symtons but I'm just so unsure An my moods have been changing a lot Xx