mackenna shot scare

i received my first shot last thursday at 22weeks from my new OBGYN (i know i suppose to had gotten it earlier but thats exactly why i switched doctors because my old doctor wasnt shit) I am now 23 weeks and im about to miss this weeks shot because they said it takes about 3-5 days for my insurance to approve the medications .( They will be giving me a months supply and having a CN come to my home to administer the shot weekly) I called my Obgyn to see if i can atleast get this weeks shot in the office since im not set up with the home visits but the nurses was like they dont administer the shot in the office like wtf i just got a shot in the office last week. I know the risks if i miss a shot im only 23 weeks and already had preterm labor scare without the shot i have an incompetent cervix alreadyand i didnt even get the cerclage... i am stressed out if my baby comes early i will have a fit 😢