Can stress cause labor..

Im so broken right now my mum has cancer and 2 bad infections.. Im 36 weeks pregnant and I cant see her cos of this infections..I have to wait till I Give birth..and use a mask and gloves.. And to know my 3 year old and the new baby wont be able to be around her cos these infections are deadly and highly contagious.. And knowing that she doesn't have much time.. Im 💔 I really wish I could go by 37 weeks so I could see her