I don't know?

I'm taking pregnancy test after pregnancy test and once I take it it looks like a really really really faint line and I continue to look at it and than I leave to go some where and come back and a second line is there but I'm hoping it's not playing games with my mind I want to take a test and see to line appear somewhere at the same time or come in at least 3 minutes after I added pee drops to the test I feel happy, hurt and confused all the the same time because I know I did everything right and I worked so hard this time and after dealing with my heart failure just a couples of months ago I just want something to go right for me. I fought really hard to get hear now I just don't want to be sad again because it didn't work I really want this to work. I'm taking prenatal vitamins daily even before I did the embryo transfer and I'm drinking pregnancy tea , mothers milk tea, everything to make this work. I know a girl right now my family was talking so highly about and she has two kids now and she doesn't even won't them. And she can get pregnant just fine with no problem. It hurts me because if the kids ever get taken from her they will pick my niece that is on 19 over me that has been ttc for years and I'm 28 what's wrong with this picture. I get so depressed because I just don't know anymore. I'm don't have any more money to do another ivf cycle and I been at this since 2012. I just really want to this to work. So if you ladies don't mind please pray for me and pray that I am pregnant and that my embryo stick so hard to my uterus that she or he doesn't let go.