Need help!!!

So I'm 6 DPO today... Yesterday and today I've been feeling some cramping (not painful), pelvic pain on the left side, today I have some minor pain on my lower back as well and the past 5 days a tightness that's comes and goes all day on the left side of my uterus (this is what is worrying me a little, since i havent felt that when I got pregnant with my miscarriage 2 years ago). What do you guys think? I still haven't test, I think I will tomorrow, I was waiting a little closer to "3weeks" to test!