Am I pregnant?? Answers please!!

Okay, so I took four pregnancy tests. Two yesterday and two today. The ones yesterday were both ClearBlue Digital and they both said pregnant. I took a ClearBlue Line test this morning and it was faintly positive. I took a ClearBlue Digital a few hours later and it says not pregnant. So should I just say the last one was because I didn’t have very much HCG in my system because I’ve already peed a lot today. I also am now two days late on my period