Need advice

I’m 19 and going to give birth in August and I want my mom and grandma in the room ( my husband is invited but says he doesn’t want to be in there ) and I’m already self conscious about my body . The thing is I use to cut my self when I was 15 and there not tiny little scars there huge all down both thighs and I’m just worried that they might see them and honestly I don’t want to have to worry about covering my self up when I’m trying to push a baby out . And I can’t just tell them because it will mess are relationships up and I’ll feel like I’ll disappoint them . Please and advice is helpful