I just had my son 10 months ago. (I’m not trying to get pregnant nor am I not trying to get pregnant if that makes any sense

 lol). I had heartburn my whole pregnancy and I haven’t had any heartburn since I gave birth 10 months ago until today so I decided to take a pregnancy test tonight and I thought I seen a very very faint line so I took the pregnancy test apart (I did this while trying to get pregnant before my son and never seen color) this time there is color on the inside of the pregnancy test. My periods have been a little irregular here recently but if I’m right I’m not supposed to start my period for another 7 days so could this just be very early or am I completely overthinking