Hi, this is a Cobweb Weaver (Theridiidae). If this were a Black Widow (Latrodectus) I’d expect the legs to be more robust. Might be a False Black Widow, Steatoda grossa but I can’t see it as well as I’d like and I’m not sure that egg sac is a match so filing to family.
I know the picture shows little detail. But there was red on its back. I believe it was a black widow.