Change of plan and now very anxious!

Hey, so my partner is a deep sea diver and is away atm. I have no problem with him working away as it gives us a nice break from each other too but I'm almost 27wks with our first and he's been away now for the past 2wks and has now told me that he won't be home until the end of August! My due date is 13th September and I'm getting very anxious about it all now and really scared incase I end up having to go in early or just incase anything happens and he's not home! Anyone else pregnant and partners/hubby's are working away?? I'm pretty scared and just looking for some support in other people and like to know if anyone else is in the sameish boat? Xx