7 weeks old baby waking up screaming ???

My baby is waking up screaming this is the second time today ...I have no idea what's going on . She cries loud out of the blue , I do everything possible to clam her .certaing positions seems to bother her more ... I offer bottle she pull away . Breast pull away , diaper clean .no temperature but she  Scream lungs her out for a few minutes then fall asleep exhausted one hour later scream again .... Any thoughts ?