I am also 8 wks and I have used lanolin (more specifically manufactured by Lansinoh.) It does wonders. It's made for breastfeeding mothers to help with dry cracked nipples and keeping them moisturized and supple.
Check with your OB they should be able to tell you how to get it in your area. You may be able to order it online also. I got my first tube when I had my first daughter from the hospital. Maybe check there too.
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