Seconding talking to your GUM clinic about this. You could try a different pill potentially.
I have the implant, personally I wish i hadn't gotten it. It lowered my sex drive a bit and I get weird irregular periods now which are really incredibly annoying. Everyone responds very differently to it, but constant spotting is quite common. It's fiddly to have taken out early too.
Was on the injection before which completely stopped my periods (great!) then had to come off that because you can only be on it for 3 years (due to osteoporosis risks I think). So then I went onto the pill and again that was fine, no periods etc but I was so scared I would forget to take them I wanted something longer term.