NDUTA WAWERU IN Nairobi's sprawling Githurai estate, a shipping container-built complex is attracting local residents - both young and old. Initially built to help combat a drug problem, the complex became popular when it switched to offering a new product: reproductive health services.  The centre has become a one-stop resource centre for many young people in the neighbourhood, including Joan Mutheu, also known as J Diva or MDQ.  “As one of the many young people in the area, any discussion about sexual and reproductive health with our parents is a no-go zone. There are some things I could not ask…