Stretch marks after having a baby?

so i just had my first baby and have horrible stretch marks, they are red in color and ive tried palmers coco er,tummy er, and ive also tried vitamin e oil. nothing is fading them at all. is there anything else that will work that anyone has tried? and does situps help take away extra flab in the tummy/love handle area? if u have any workouts that help and/or stretch mark remedies please let me know thank you!