Her mind is playing tricks on her, if her period was due a month ago there is absolutely no way she can feel the baby. Especially with all the negative tests, she's not pregnant
She can go to the emergency room , shell get a bill though they would give her an ultrasound . Or go to a free clinic if she doesn't have insurance and doesn't want a bill . Her due date would of bee. A month ago ?? I'm going to go out on a limb and say she is making herself believe she is pregnant blood work negative as well as tests I'm going to say its in her head . Yes you can make your body believe something . She hasn't had a period though for nine months maybe she should look into a doctor so they can evaluate her situation see if her periods are abnormal and maybe see if anything will help with that . If she was able to have blood work done I'm pretty sure she can look into going to the doctor . Has she talked to her parents ? Goodluck