While it's theoretically possible that Elayne could die before her children are born healthy, it's prohibitively unlikely at this stage of her pregnancy and given the medical resources available (channeling included; I wouldn't want to try figuring out the weaves for an incubator, and even then a baby born prior to the seventh month of pregnancy will probably die quickly if it's even born alive).

I'm not saying a Forsaken couldn't off one or all of Rands paramours though, I'm saying that's a dubious route to sucess: It might make him behave irrationally, at least in the short term, take risks he otherwise wouldn't, but he'd also be out for the blood of whoever was responsible. Unless you did a VERY good job framing another Forsaken (and you could still be caught; look what happened when Rahvin tried to point Rand at Sammael) it wouldn't materially affect Rands ability, but WOULD put his hands around your throat faster than you can blink. The last time someone attacked one of Rands girlfriends he channeled balefire at them with the True Power while LTT whimpered in the back of his mind about touching the DO.