R&B singer Cassie is expected back on the witness stand Friday in her ex-boyfriend Sean “Diddy” Combs' sex trafficking trial, with prosecutors insisting cross-examination finish by the end of the day over concerns that the pregnant Cassie is near the birth of her third child.

Mr. Combs’s lawyers have been questioning Casandra Ventura about the drug-fueled sex sessions that he called “freak-offs,” and about the nature of their long relationship.