positive test!

this was my 3rd positive test over the course of 3 days & my darkest line thus far. it is from 2 days ago & i am impatiently waiting to take one more test hoping i get a darker line. this is my 3rd pregnancy but my first 2 resulted in miscarriage. i took this test 2 days kate for my period & my first test i took was on the day my period was due & the line was VERY faint. i am starting to have a few symptoms such as, nausea, mood swings, & sore nipples. the nausea has not resulted in vomiting yet. today i am feeling pretty good, nipples are still sore but no nausea. is it normal for me have have days where the nausea isnt there & to have no concerns on that? i am very scared this time around and hoping for a positive outcome & to bring a baby home with me in 9 months!