period after abortion

So I had an abortion last month july 12th and I know it was successful because I took a test around my 4 week and it came out negative and the week after I started spotting for 2 days then bleeding but i’m just now bleeding heavy for real at first it was light , but my question is it normal to bleed this long i’ve been bleeding for 12 days but my normal period used to be 5 days and i’m aware it changes