Are Delayed Menstruation With Scanty Flow And Bloating Signs Of Pregnancy?

I think I might be pregnant, but feel as if it s still too early to take a test? I m bloated, and my period was late, by almost a full week, however, I just started my period but it is super light, and very white-ish, pink-ish in color. I have felt as if I had a cold, but have gone to a doctor and they told me literally there was nothing wrong with me My lower back aches, as well as my stomach, however, my breasts don t feel tingly or have any soreness to thwm, but i have felt nauseated at times. Is it possible I could be pregnant? If it helps, about 2 months ago, my fiance and I had a miscarriage at 6 weeks, from the egg implanting too low in my uterus. Could this happen again?