IVF frozen embryo transfer

This is my second cycle of IVF i will only be doing transfer since i still have frozen embryos,

When i transferred fresh embryo i had implantation bleeding at 6dpt and i got my BFP at 9dpt blood test was at 11dpt hcg level was 203miU few days later lost it.

Anyway, i was reading about frozen embryos and i read that it takes longer to implant,

When did you try testing at home and it was accurate? And when did you do first blood test and how high the HCG it was?