Feeling stuck

I love my son, wouldn’t change him for the world, and ever since he was born iv loved life, being with him and watching him grow, but since iv gone back to work, and out of the bubble and back to “me” in a sense, i suddenly feel really trapped, like having a son means I can’t just up and move to a new town if I fancy it, bcoz have to stay close to family/in-laws for my son. say if my relationship does break down ( there isn’t any issue to date like ) or we not happy for a reason just we grow apart, will we stay in an unhappy married just coz my son, coz I know I would, would I do things way they “suppost” to be done when you have a kid or can I do things differently, just suddenly feel very trapped… is that weird?