Feeling really down

So I’m 9 weeks and 2 days. Not that it matters. Not what this is about. Anyways, lately I’ve been feeling super depressed,. Idk what it is. I feel like I’m doing everything. I have 2 kids who are 6 and 1 . And I do the cleaning shopping cooking baths for the kids everything. On top of working full time and being pregnant. I never get a break. And I want to ask my boyfriend for more help so bad. But he just lost his brother. I’m getting super overwhelmed. And I feel myself ready to fall apart.. I just don’t know what to do.

Anyways I’m just venting. Thanks for reading