Hi, Veronica:
You need a vacation to reflect on your life, marriage, and how you want to spend the rest of your life. You are at a turning point in your life right now, sex is the symptom.
You are not happy and are projecting it onto your husband. First of all, what do you need for yourself?
How do you express your needs?
Are you in touch with your feelings and ask for what you need by using I statements?
Here is a formula:
I feel.................................. (State how you feel)
When I..............................(Identify the problem)
Because...........................(Say why you feel this way)
And I need.........................(Propose how to resolve it)
Get you a feelings sheet and start practicing saying how you feel about everything.
Good luck. D.