I feel bad but given timing it’s best for me

I haven’t had my period in 51 days... I have a 7 month old... my fiancé went to jail today. And I’m dealing with things on top of things. Im not ready for another baby. And I havent been taking care of myself like I should. I needed to go on birth control and never did due to life being busy... but that’s no excuse. If I’m pregnant I’m thinking about abortion... can I get some opinions... I’ve never been in this situation. And being a mom, it’s a hard one to make but I honestly feel as if it’s for the best...