What should i do

Me and my husband we have 2 kids already one is 1 years old and one is 7 months so they are 14 months apart, lately when I am ovulating I'm very horny sex Drive and I just want to pounce him. So this morning I walked into the bathroom to talk to him "he said hey baby I see that you're done ovulating do you want to have sex tonight" and I told him I was not feeling up to it, to have sex with him is that normal to feel like that after