Pregnant Symptoms, but Negative Home Test

I need opinions on what you think of my situation. I started noticing signs of pregnancy about 3 weeks ago (enlarged breasts, bloating), and in the past week I have been nauseated, vomited once, and have mild lower back pain. I miscarried about 11 weeks ago at 6 weeks pregnant. My symptoms last time were enlarged breasts, bloating, and major lower back pain. I have taken 4 pregnancy tests in the last two weeks and they all came back negative. Anyways, I am just wanting some one elses opinion on whether they think I should wait longer and take another pregnancy test, or see my dr. This would be our first child if pg. Thoughts, suggestions? Thanks!