Hard time staying pregnant

Katie
Does anyone else have a hard time staying pregnant? I have had two early miscarriages. With the first we weren't sure what the reason and if it would happen again but I just recently had another early miscarriage. It seems like as soon as the egg implants my body rejects it. Getting pregnant is the easy part; as long as we have sex when I ovulate I get pregnant. I have an appointment coming up to try and figure out why it's happening. I am wondering if anyone has some insight on this? If anyone has the same issue and what the reason has been or what you are trying to do to fix it? My guess is it has to do with hormones because I didn't get my first period tell I was almost 19.