my cousin needs help. what do I do?

My cousin took five pregnancy tests, they were all positive, this was almost a month ago. Shes been puking and having hot flashes and her sense of smell increased a lot. Her periods have been weird and lasting less than normal and are pink instead of red.  I love her, but she's been sleeping around and isn't at all being safe or considerate of the fact that she could be pregnant. She's now dating a new guy without what his feelings would be and she thinks she's going to trap in by getting pregnant. She's been drinking and smoking weed. I hate to think that she's going to kill her baby or cause health risks. I just had my daughter two months ago and I've tried to make her see clearly and come to earth. Is she going to kill her baby or could she just not be pregnant?