I need positivity

Idk if I have mommy burnout already but I’m 37 weeks pregnant and have 20 months old. Lately he’s such pain in my ass lol 😂 I mean damn..... I never felt like “leave me alone” but I’m so tempted to put him in day care just so I have time for myself. It sounds so selfish I know... but we are struggling so much financially and day care isn’t even a conversation. Not even a babysitter. I don’t have friends or family members close. I’m just so scared once the baby gets here I’ll just lose it like I’m scared of myself. I’m barely holding onto not screaming or just breaking things around the house whatever gives me trouble like the tv this morning, wouldn’t turn on the show my son likes! Omg I almost seriously considered throwing it outta door. I feel like this or worse everyday... what do I do guys 😩😩😩😩