I have to say...I'm in a similar situation. I have two daughters, a 9 year old, a 6 year old, and I'm expecting a baby boy in 6 weeks. I had terrible stretch marks from the first two girls, but so far so good with this baby.
A friend in the company I work with recommended one of our products to me, and I've been putting it on faithfully. I can't tell you for sure if it's the product I'm using, or if I'm already stretched out...but I don't seem to be getting new marks. This cream is formulated with specific botanicals to support the collagen and elastin in the skin.
Here's a link to read a litte about it. https://www.arbonne.com/products/not-so-basic/skin/specia...
If your interested in trying it, I'm happy to show you how to sign up to receive a 35% discount or how to get this product free with a purchase of the baby care products. There is also a 45 day money back guarantee, so if you don't love it, you won't be stuck with it.
About wanting to get into a different job, I'd love to speak to you about what I do. This business has blessed me in many ways, but the biggest gift is that I get to stay at home with my two girls and work from home with this pregnancy.
Good luck and congratulations on your pregnancy and growing family!