Implantation bleeding? Advice?

Can anyone offer some advice please.

I had very light spotting (brown) 18th March, which was 9dpo. I then had a positive test 19th and spotting continued on and off until 23rd, only when wiping although did show on a tampon on the 20th.

Tested again on 23rd and test was darker, did a clear blue 26th which showed 2-3 weeks.

I am not sure if what I experienced was implantation bleed or not?

I would appreciate some feedback and advice as this is my first pregnancy since miscarriage in Nov.

Thank you x