Pregnant ladies, does it scare you about when you'll go into spontaneous labour?

i'm 21 weeks pregnant with my 3rd child. my 1st was a c-section (due to her being breech and her head being stuck under my ribcage) and my 2nd was induced. i'm just really worried that this time i will go into spontaneous labour and i'll be all alone. i'm a SAHM and my fiance is a mechanical fitting engineer for the MOD building warships. he doesn't always get a phone reception whilst working on the ship (due to it being an MOD site, he is not allowed to give me the works number also). i'm petrified i'll go into labour and he will miss it. did anyone else worry about this? i did read however that it is more common for a woman to go into labour at night, it was something to do with the moon, i can't remember! lol, god i hope i do, that would be perfect x