PMS and hating sex

My PMS starts literally as soon as ovulation is past. It has been getting progressively worse each month. Anxiety, depression, irritability, mood swings, cramps, nausea and headaches are all part of the fun, of course. One more hard part about it is that during this time, I feel an absolute aversion to sex. I love my husband and the aversion has nothing to do with him. It's simply just that I vehemently hate doing anything sexual. It's confusing to him, because I either don't communicate what I feel, or if I do, he just takes it the wrong way. It gets to the point where when I actually do want to have sex, he thinks I'm only pretending to want it for his sake, so he refuses to do it based on that idea. I just want this feeling to go away! It is really difficult to deal with in a relationship. Any advice on getting past these feelings?