A coincidence? Advice-Irritated

So i have always had fairly sensitive skin so not been using any creams on  My belly no avoid stretch marks i was in the 'if i get them i get them' train of thought and assumed i just would anyway as sister and mum both do. Up intil last last (33+4) i had NONE. Decided for some reason to cover mt belly in a sensitive cream last night and this morning woken up with 3 huge white stretch marks and a few red ones. They are def stretch marks and not a reaction. Do you ladies think this is a coimcidence and they would have happened regardless of the cream? I dont know wether to keep moisturising from now on to avoid it getting worse, or wether to stop because cream is making it worse? Argh!!!