Possibility of positive pregnancy.

Hello doctors, I'm trying for 2nd child since and since 2 yrs..it did not happen. 1st child was born in 2017 and was a natural conception. I've undergone IVF day 5 blastocyst Grade 3BB fresh embryo transfer on 9th of October. My endometrial thickness was 9mm on 9th October. I've no symptoms reported by so many others like nausea, cramps, increased vaginal discharge, etc....other than mild lower abdomen pain sometimes Should I think that the ET has failed? My Beta HCG test is scheduled for 23rd October. Yesterday I took ZyHcg 2000iu Im injection as prescribed by doctor. Do i need to wait till 23rd to get tested or Can I do beta HCG a little earlier as well. Is there possibility that i get positive pregnancy in this cycle. Kindly help. Feeling very anxious . Thanks for your responses.