Hiding from family 😕

Laramie
I'm pregnant for the 4th time in 4 year . I lost my first baby back in 2012 but I have a 3 yr old and a 1 yr old as well as a 9 yr old step son I've raised since he was 1. I was not planning on getting pregnant but I did eventually Want more kids . My parents help us out ALOT and support my family with cars food and phones. My husband has a great job that pays 22 an hour but it's not a lot for a family of 5. Anyways we are spread very thin and I really. Am scared to tell anyone that we are expecting again, also because my family gets worried with how much I handle with taking care of the 3 kids alone when my hubby works 7 days a week. I always want to get a job to help out but daycare costs more than I would make and I have no family available to watch them. My hubby agrees I should wait til at least after my older sister gives birth to her first child August 19th. So that I don't take away from her time. I will be 13-14 weeks when she gives birth , and this being my 4th oregnancy idk if I can hide my belly . Anyone have any advise on any of this?Â