If I were in your situation, I would ask help from my mom. Lilipat muna ko sa house ng mama ko until I can do it on my own.
Yeah nakakaawa kase yung anak mo na lang ang living reminder nila of their son but they dont have a right to hold you down because of that. At the same time, if living with them is causing stress and problems, I suggest you talk to them first. Pag hinde maayos, wag na ipilit magsama. Kung magalit sila, ehdi magalit sila. I'm sure it's really difficult for you because your husband isnt around anymore but you have to be even stronger now that your child is only depending on you na lang.