Is there hope for my pelvic floor muscles? need hope stories!

After DD1 i worked on them no end and at my check up the OB said they were fantastic you would never of known i had a baby!

Now after DD2 i haven't been working on them as religiously, and at my check up she asked if i had been doing the exercises and said it could be better!

Now i know how to do the exercise but it dosen't feel quite right, im having slight trouble feeling it if that makes sense!

Can i come back from this and have a "tight" pelvic floor again?

and more embarrasingly if and when DH and I ever DTD again - is he going to notice a difference?