What is the point? Why are you questioning if it was 2 months or 4 months? It is apparent that YOM is having a tough time with her sexual relationship with her husband.

YOM, you are so young and in the prime of your life. Has your husband been seen by a Doctor? It could be a physical problem. Is he by chance having an affair?
Are you so overweight as to be repulsive to him? Men are so vain. They are driven by what they see. It is not till later in life that they appriciate the personality of a person over the physical attributes.

You and your husband need counseling. If you have children together you should consider getting it sooner rather than later. Don't just suffer in silence. It will destroy your marriage.

Best of luck to you and I will be thinking of you .

Eric