Well the male has very noticeable testicles and I mean very noticeable LOL

The female I have yet to see any type of bumps there even tried pushing a little back to see but never comes into view. I have tried to feel for nipples as I heard that only female rats have them but she doesn't sit still long enough for me to get a good feel ( lol sounds just wrong)
Are they going to be really noticeable at this age? I am guessing they are about a month old.