What is this house plant?

It has waxy leaves that are oval shaped. Its flowers are strange, they start off small, with four petals, and then they all fall out. Once this happens, another section grows and four more petals grow, which will once again fall out only to have another section added. After a few weeks, I have these 10cm long "bodies" with the latest four petals at the top. The flowers are orange. I hope someone knows!