I genuinely think she has some form of drug dependency.
With Tamara, I wouldn’t be surprised if she’s pregnant (other than the fact she barely ever sees Jay, so how has it happened?) - what will her life consist of once the girls are independent? I wonder if she’s realising that Sophia is growing up quickly and will rebel / make her own way in the world in a few years, following by Serena, and she’ll be left alone. She never sees Jay, Petra is in the States and Bernie won’t be around much longer. She relies on those children for company and a purpose, so having more wouldn’t shock me in the slightest.