I am about to turn 17 and I haven't had a full period since the beginning of January and my belly has grown just a little bit but it is hard to tell because I am a chunky girl. My lower back hurts, I'm always tired, I always have to use the restroom, and my legs hurt when I walk a lot. I have taken pregnancy test and they came back negative. I also always feel weird feeling on my lpwer belly like a little movement but it is only inside. Can I be pregnant?

