C-sevtion question

Jessica • I have a little girl in heaven and 2 little girl's and a little boy on earth with me a wonderful husband of 10 years

This is my 4th pregnancy my scar hurts some it's been 6years since I had my last c-section I also get a rash every so often in this pregnancy near my scar I'm only 4foot8 so even though I don't weigh a lot I still a bigger girl because of my height I'm 18weeks