Really struggling with this..

pregnancy after miscarriage (5th pregnancy currently, I have one child) is SO hard. My hcg is rising but my progesterone is dropping. I spotted for 4 days last week. I’m cramping. I am really struggling to stay positive as people keep telling me to do. I feel like this will end the same way as the others. I am so sad and don’t even know if I can make it through this. One dr tells me my progesterone doesn’t matter but everything I read says it does. My tsh is too high and nobody cares. I’m so scared. All the joy of pregnancy has been robbed from me and I just cry most days and every time I go pee I fear seeing blood. Any advice? Words of encouragement? Anything? Help