Pregnant??

So, I noticed last week I was having back pain, fatigue, extremely sore breasts/nipples, and occasional nausea a few times, and mood swings like CRAZY... Knowing that this week was the week I start my period usually, I overlooked it. According to both of my apps, my period was due two days ago and I didn’t even notice it cause I’ve been so busy. I figured the symptoms I had noticed were just my usual PMS signs but now that I think about it, something has felt a little different. So, I decided to buy a dollar tree test... and there was two lines, one being faint... after that, I immediately left my house and went and bought two more tests. I’ve only taken one of the two extra I bought and these are my results... taking the other in the morning 😀 I’m so scared/nervous/happy now.. I just knew they were going to be negative but look. I’m 15 or 16 DPO