Hate sex with my husband after baby

My son's 8 months & I've only had sex with my husband maybe 8 times since then. We waited about 10 weeks after my baby was born the first time & I was dry, it was painful & uncomfortable. Now, I'm still attracted to him but when he initiates sex I feel like gagging & the thought of sex makes me nauseous...don't even know what to do about this 🙁