Do I rely on my in laws too much?

I'm a FTM and my newborn is 6 weeks old. 2-3 times a week either my MIL visits and I visit her so I can have a nap or clean the house. Plus she usually baby sits for an hour on the weekend so my husband and I can do something together. Anyways I feel horrible about it, like I should be able to manage better without there help. Is this normal?