Lying to my husband to have 3rd??

💙❤️
So my husband has told my before he doesn't want anymore kids we have two. From the first time being married my husband and I discussed having 5 kids. I was an only child and he had 5 brothers and sisters and we both just wanted a big family. Of course as time went on that number got less and less. I still really wanted three and so did he at first.. After our second he decided he didn't want anymore. But he knows I still want one more to complete our family. I can not take birth control because of health issues and he knows this. And yet he still cums in me all the time. I do have PCOS so conceiving would be hard. But I was wondering if it would be wrong of me to take clomid without him knowing? I'm I horrible for even considering it...? :/