Hello,
Welcome to ehealthforum and thanks for writing
After hymen is broken bleeding usually occurs for either few hours or a day or so.Prolonged bleeding associated with blood clots can be due to various reasons as local injury/abrasion,underlying pathology as cervicitis,endometritis etc.
A pelvic examination would help in giving a better idea and if required investigations may be done as USG scan.
Kindly visit a Gynaecologist for evaluation.
Take care!