Anyone experience a chemical pregnancy after a FET?

I received some heart breaking news today. I did multiple hpt all positive from 5dp5dpt. Went in for my beta and was positive. Went in for my second beta numbers increased but didn't double. Went in for a third today and numbers declined. They said this is a result of a chemical pregnancy. Anyone experience this? What happens next? How long until I can do another FET? I can't stop crying. 5 failed IUI's and this was my first round of IVF and it worked, and now it's gone. Just devastated. 💔