This is my first pregnancy and I am starting to grow pretty rapidly now (I'm 19 weeks). I have tried using Bio Oil and Palmers Healing Oil and both gave me a rash. I am now using the Palmers Massage lotion for stretch marks with collagen and elastin in it. Severe stretch marks run in my family and I already have stretch marks on my legs from growth spurts as a child. I initially felt like just the massage lotion would not be good enough for prevention because it seems kind of thin. However, I don't think my skin likes any type of oil as I seem to always get a rash. Any suggestions and/or experiences? What is everyone else using?