Is this a valid contributing factor to not want sex with your spouse?

My husband and I have been married for 6 years. Over the course of those years, especially after having our two kids my weight has fluctuated a lot. Mind you, when we first got married my husband was very overweight, but lost a ton of weight about 1 year in and while it fluctuates, has not been that heavy since.

Anyway, this summer has been one of the most stressful times of my life. After losing weight in the beginning of the year, I gained 40 pounds in 4 months. I’m overweight, (5’3.5 at 210lbs). My husband rarely has sex with me now and finally said 10% of the contributing factor of not wanting to have sex with me is because I gained “ALOT” of weight. (He also recently told me he struggles with attraction towards me now but insists it’s not physical attraction in response to not having sex for 3 months). Never once have I ever made him feel less attractive when he was up 75 pounds at different points of our relationship. I know I need to be healthy, but am I wrong for feeling like it’s total crap that my husband partially doesn’t want sex with me because of some extra weight? I need opinions because I’m too emotional hearing this to see straight. Thank you 🤍