Can get pregnant but can’t stay pregnant??? Please help me

Mandy • 💏2012 🎀👶🏼1/10/14👼🏻+👼🏻+👼🏻+👼🏻2019👼🏻6/30/19,👼🏻5/31/20

Ok so I need advice and to hear some positive stories because I’m beginning to really loose hope and I’m in a verrry dark place right now. So between June and now I’ve lost 3 baby’s, 2 miscarriages and one chemical pregnancy. The first mc was a blighted ovum where the only thing that forms is a gestational sac and your hcg continues to rise but a baby isn’t formed. Then I had a chemical pregnancy right after that and then got pregnant with the one that was my second mc which I just had the dnc for almost 3 weeks ago was looking to be a normal pregnancy but I had a huge mass of blood and tissue form behind the baby that caused it to die and have to be taken out. I’m completely numb right now i can’t cry anymore I hurt so bad but I feel like I can’t show any emotions. After the past losses I was so eager to get right back to trying but this time I feel different I feel like I don’t have it in me anymore but at the same time I still desperately want my rainbow baby. Instead of doing all the bbt and opks I’m just going with the flow with the if it happens it happens kind of mind set. I don’t know what’s wrong with me I’m not having any problems conceiving but I can’t carry my baby’s longer than like 6-7 weeks. Has anyone else ever had this problem and went on to have a healthy baby afterwards please only people who have had multiple losses since you can have a loss and it just be a fluke thing but having multiple means somethings wrong. I need help I want to have hope and hear of someone else having this happen and then getting their forever rainbow baby. And yes I have an apt scheduled for Thursday this week to have tests ran to try and see what’s causing these miscarriages. I hope it’s something as simple as just needing to take progesterone supplements while pregnant or something. Idk if it helps but I’m a 26 year old woman who is 5’3 and I weigh 112 I’m worried it could be that I’m under weight but I just can’t put on weight to save my life believe me I’ve tried. I have a very healthy 4 year old daughter who I conceived on the first try and had the healthiest pregnancy you can imagine.