Losing hope

So I've been ttc for well past a year and it just won't happen. Ive been using ovulation strips for 2 months now and still nothing.. me and my bf have sex every day during my fertile period no protection and I've never been on birth control.. idk if we have any infertility issues because we created a baby last year but I wound up miscarrying and ever since we have been trying. My body didn't have a successful miscarriage, I had to have the baby surgically removed from my body and the Dr doesn't know why that happened. I'm losing hope ladies 😭 I feel like shit bcz I can't give my bf a family and every month I spend over $50 on first response pregnancy tests and their all negative. I just wish that it would happen..