Why do i keep dreaming I'm pregnant?

i keep dreaming that im pregnant too with my ex boyfriends baby nd my belly grows and i have the baby when im 17 i dont get rid of it it all feels so real but im 16 not what i want right now anyway i been reading and it says its some change of life or wanting a family or our subconscious telling us we're pregnantt you can google it i didd :)