How long did it take for your HCG levels to go?

Bit of a long one but I’m super confused and concerned so please bare with me! So I found out I was pregnant on the 29th of April, 5 days after a 4 day bleed which I thought was just a normal period but obviously not, so I just was going by the previous period which started on the 25th of March. Because I’d been bleeding I booked myself a private scan on the 5th of May when I should have been 5 weeks and 6 days, they said there was no pregnancy in my uterus but she thought my left tube was inflamed/blocked which is strange because I’d had and HSG that came back that my tubes were all clear. Did a test on the 13th of May just before I went on holiday and was still slightly positive. On holiday I had horrendous pains in my lower left side and ended up in hospital, they did an ultrasound on everything and said it was all ok but I don’t think they really looked into my tubes or uterus much as they thought it was my appendix but it wasn’t, gave me painkillers and sent me on my way, I’m still getting the pain about a week on but not as bad, just more achey. I took another test today, 2 weeks after the original and it still looks the same, hasn’t got lighter or darker 🤷🏼‍♀️

Top test is from May 13th and bottom is from today May 26th.

Thank