Our Rainbow Baby??

I am 26 years old and my husband is 28. We both have had a calling on our lives to be parents. We've been TTC for 3 years. We've had several miscarriages. I've never made it past the first trimester. I'm trying to stay as calm as possible right now but honestly my hopes are sky high. I always buy the Clearblue weeks estimator. My hormones have been the cause of our losses. They just won't stay up and my body fights the pregnancy. I have kidney disease. I constantly have a kidney infection, kidney stones, or at least a UTI. My doctor told me how UTIs cause miscarriages all the time. I take Microdantin now to keep any infections from happening. I've only seen one heartbeat on a sonogram before and I made it to 11 weeks before God decided our Angel was to beautiful for this world. I've never seen that 3+ on one of my Clearblues though. I'm so ready for Sunday to get here so I can take another test. We have both been praying that this is our time. Could this finally be our rainbow baby? Will we finally become parents? I'm so nervous. I'm so excited. I'm taking every measure to ensure the baby's health. EDD is July 6, 2017. I've put pictures of the last test I took, a picture of my husband and I at age 6 months (me left him right) and a screenshot of how far along I am. My OBGYN wants me to wait until I see that 3+ before I come in for an ultrasound. I can't handle seeing another empty sonogram. I'm trying not to think of it. I am not experiencing cramps or any spotting. I've already been to my regular physician to confirm the pregnancy. She checked my progesterone levels but she didn't have anything to compare it to. I went on Monday. She said ballpark I was anywhere between 1-3 weeks. Ugh. I'm staying calm but I'm getting so anxious. C'mon Sunday!!!