Scared of preterm delivery

Ridlid87
I am 23 weeks 5 days.. and I am very scared of preterm delivery.. although my doctor didnot say anything like that but she talk very less unlike other doctors so I am a bit worried.. I have pain on and off in my lower back and abdomen.. Right now i just wokeup to give breakfast to my husband and after I gave it to him when I set down on bed i feel pain as if when I did not eat for too long or may be gastic discomfort because I ate one slice of pizza last night and straight went to sleep. Right now just my back hurting but it also happening most of the time when I do some work... Btw I have a history of 2 miscarriage.. one was 5 weeks and second was ectopic.. so this is my 3rd pregnancy and first child.. its been a scared journey for me so far.. I was taking self suggest bed rest until now.