Not telling my husband about taking chlomid?

My husband and I have been trying to convince and my obgyn wants to put me on chlomid next month if we don't conceive this month. I'm 9dop today and not feeling super hopeful about this month. My husband has issues with everything related to TTC (he has OCD and problems with anything medical) and although he is a great father to our daughter and did agree to TTC he doesn't want to know ANYTHING about it and doesn't like the idea of "trying". I don't ovulate properly (I have stage 4 endometriosis and get ovarian cysts instead of ovulating each month) and I believe our daughter was a miracle baby. I don't think we will be able to get pregnant on our own. I know my husband will feel more pressured if he knows I'm taking chlomid and it will cause issues in the bedroom (any slight pressure does and that's lot of pressure). I'm thinking of just taking it and not telling him. Is that bad?!? I feel bad about keeping the secret but I don't think he would want to know...