Help!! 3+ days implantation bleeding

Mon

Hi everyone - has anyone had implantation bleeding that lasted longer than 3 days??

I tested positive with a very very faint line w/ first response test 10dpo and started spotting that day. I am now 14dpo, getting darker lines with hcg strips and first response test lat 12, 13 and 14 dpo. However, the spotting has not stopped. Every time I think it’s letting up it just keeps coming. Most of what I read said shouldn’t last more than 3 days. Help!