38 weeks and 3 days and having cramps

Ok so I'm 38 weeks and 3 days and I'm getting awful cramps in my tummy like period pains only milder it's like an upset tummy and sometimes making me need to go toilet? What would this be should I go hospital? When I seen my midwife the other day though she told me my baby's head hadnt even engaged yet so I don't know what to think I'm scared 😓