Does anyone else have these problems?

when my husband and I have sex before we even get started some days I feel like,"hey I'm probably going to orgasm. " And some times I might, but most of the time it's like its right there but doesn't want to go.... I also have this problem where if I'm close to orgasming and my husband changes anything he's doing(speeds up, slows down, goes deeper etc) I just lose it and it usually takes awhile to get it back. Does anyone else have these problems? (my husband is great in bed, and won't let himself cum until after I've gone or I tell him it won't happen. He is also always up for using his tongue and fingers but penetration orgasms just feel better to me)