Really struggling with unexplained infertility

I'm currently in the TWW after my first IUI and I just have a feeling it didn't work. I feel like it's never going to happen. I have called a therapist to see if she can help me. I feel lost and depressed. We did conceive 6 years ago but we were young and not ready, I had a medical abortion. I regretted it the second after. I hold on to a lot of guilt even before ttc and now this just makes it worse. I feel like I'm being punished. Please no hate comments.