TTC after miscarriage at 16w4d...

I had a miscarriage in July due to oligohydramnios (low amniotic fluid) and I’ve been hoping for my rainbow baby ever since. After losing our son, my boyfriend and I have grown closer and we started trying again a few months ago with no luck. My periods are normal and always on time or a day or two late. We have sex at least 1-4 times a week and nothing is happening. I’ve become a little discouraged and wanted to know if anyone has any advice or tips or just words of encouragement. How long did it take you to conceive after losing a baby? Will I be able to carry a baby to full term? Could there be something wrong? Thank you ladies 💔