You do what's best!!
This has been a good read for me as it affirms I need to focus more on DD and DH and I!!
I have my parents, my MIL , my FIL ( separated) and grandmother in law wanting to visit every weekend. My DD is 22 months so older but the whole weekend is taken up by visitors or going out to meet them.
I also think it depends on the relationship you have with extended family - if they visit and play with your baby it's helpful but coming to visit your baby just for a viewing is not ok ( that's what I get!!) sounds do strange but true! Not sure if anyone else gets this?!
I work part time and also 17 weeks pregnant I need time fir me too ( I keep telling myself that!!)