Tried and unfulfilled

So I been with my husband for a total of 15 years...we have been married 6 yrs..but before we got married we split for 2 years ..and reconciled ...but anyway after marriage ..even before sex was boring and got worse after marriage..I became emotionally cut off and distant...even pulled away for awhile because it was getting unbearable.. I eventually tried again and introduce spanking and slight manipulation and other kinks and dominant traits into play and he did it and it was better was the sex it self was not fulfilling...now mind you my husband is not a large guy in length but has a decent width..TMI WARNING: he is about 5.5 ish or 6 give or take hard ...I don't like painful sex but I do want to feel the fullness and completeness of him but don't ..never have I just have always dealt with it and...sn: I have talked to him about and he knows but there isn't much to be done physically..he does oral and it's 50/50 on how good it is or the technique..GUYS help..give me feedback back please!!