Failed IVF cycle

I had my frozen embryo transfer on 7th December and after 2 negative pregnancy tests, yesterday I had a blood test just to confirm what I already knew... Feeling numb. Our first cycle last year ended in a miscarriage at 7 weeks. I just feel like it is never going to happen for us. We’ve been trying for over 3 years with unexplained infertility. Changed our diets, have acupuncture, do yoga etc. Hate seeing my husband so low over this as well. Sounds stupid, but on the day of the transfer, there was a rainbow in the sky right over the clinic and I felt it had to be a sign that this was our time. Trying to be positive, but life just feels so unfair right now