Are they bothering you. Some people are prone to get strech marks and can.t stop or make them go away. Continue to rub lotion or cocoa butter everyday and make sure you dont scratch them. I heard miderma works really good at making them fade but id wait until after baby.
They'll fade eventually - once LO is here (or if LO is already here) you could try some of the scar fading topical stuff. Frankly, at this point for me, 2nd pregnancy and this time w/ two aboard for the ride - I figure I've earned them and DH can just love them because he helped put them there! (Of course he only put the girls there, not the stretchies, but you get the drift, lol!)