My two cents:

Three weeks and 40 miles isn't really very long. I know what you mean about spending $$$ on a new saddle too (single mom of a college student--just out of braces!-- here).

One thing your husband may not have thought about is teaching you how to sit on a bike. Find a curb, squat down and "perch" on your sitbones. You should be able to feel those two little bones connecting with the concrete. *That* is how you sit on a bike seat.

Is that the same position you have on the bike?

As soon as we know that your bike fit is good and your sit position is correct, it will be easier to help find a great saddle.

Also, what (type of bike/saddle) and for how long were you riding before the new road bike? There is always something of a break-in period. Even for seasoned riders. If I take a few months off the bike in the winter, my butt always pays for it in the spring!