Any low Hcg success stories?

Ch

I did a superovulation iui and on 18 dp iui my Hcg was at 80.5 and on 21 dpiui it dropped to 80. On 24 dpiui it went up to 93.5, but still much lower than expected for a viable pregnancy. On 25 dpiui I had a scan and they couldn’t find any sac anywhere but could see my uterine lining was thick. My 10dpiui progesterone level was high at 54. Anyone been in similar shoes and went on to have a viable pregnancy?