Am I being frivolous with my money?

My husband and I have been doing financially better than we have EVER.We spent 200.00 today on new curtains(we had old sheets up before)and a new vacuum.We plan on getting a new table,new coffee table,and a new computer desk.Were trying to find as much used pieces as possible.I feel guilty for spending money on these things.Weve never spent this much money on our home interior ever.We have no money in savings.We are buying these things because we have very limited space and our current furniture is bulky.We also plan on spending money to expand our daughters room a little bit(not much.)All together we will probably be spending about 700.00 on improving our living space.Is this justifiable or should we be more concentrated on saving?Were kind of geting these things while we can.