Pregnancy scare. Kit or i am pregnant?

I have been experiencing delayed periods for past 3 months with 6 7 days delay each month. Last period was on 27-08 2023, and my cycle typically lasts 3 4 days. I had protected sex on September 23rd. Which led concerns about pregnancy. So I took urine test o 4th October and it showed a dark kind faint line which looks like evaporation line. To further investigate i had beta HCG blood test on 7th October which results 0.10%. On the same day around noon I noticed bleeding initially in brown color but gradually turned into pinkish red then in red lasting upto 9th fully and 10th and 11th just spoting type and i used all totall 5 pads. I am confused is that implantation or my regular periods? Even today 15th October also i tested pregnancy test and only C line came but in test kit i see barely a faint line which is not seen by naked eyes if you take the kit in close toward eyes you see a invisible kind line. Is that the line inside the kit or i am pregnant? Please help me to sort out this