Mother in law?!!

So I seen in my sos phone where his mom sent this message... I'm pregnant with my second baby this is his 5th she hasn't said anything to me nor did he tell me about this. Is she telling him to let me put our baby up for adoption? When I told her I was pregnant she said we have to get married and that he has alot kids already. Etc. Opinions?

***I would never put my baby up for adoption unless I was unfit parent***

UPDATE

*** I am not sure if he deleted or just didn't respond, secondly he doesn't see any of his kids, ex wife keeps them from him, and the other baby mom lives across the country.

*** His ex wife is married and has step kids, he has tryed I have heard and seen messages where she said as long as he's with me he cant not have nothing to do with his children. She's told him I'm a whore and she is demanding him to do a DNA test on our son. She has met me one time at church when he was getting baptized. Only reason I know is because I have heard there phone convos and text messages not just hear say. They have been to court and she got custody he is saving up to go again.