What to do

Okay so, I had my period twice this month. However, the second time I’ve now been on it for 10 days and am still bleeding + I have massive pain in my lower stomach (I don’t know if that has anything to do w it because it just started a few days ago) I’m really stressed out, and I have really bad anxiety, so I guess that could be a factor. But at what point should I consult a doctor? Has anyone else had this?