Should i try and get preg so my bf wont leave?

my bf just got his ex pregnant and he called me like 20 mins ago tht he doesnt think its going to workout between us, i feel like ill die if he leaves me i kno i sound stupid but hes the one i know it he has his own house a good job and everything, should i try and get pregnant with him so that he stays with me? and if he doesnt either way ill be the mother of his baby and he will have to stick around!!????