Am I a bad wife ?

So, Lastnight before sex my husband asked me if I took my birth control. I told him yes. Even though I didn’t.

Now let me clarify. I have an appointment this coming up week to switch my birth control to the iud. And i just can’t take the pill anymore, all day, every day.. I’m in pain because of that pill. I’m extremely nauseous all day. It seriously did some damage in our love life because it took away any and all urges to have sex. I NEVER wanted to. It has been two days since I stopped taking it. I didn’t want to tell him I haven’t taken it simply because he’d get frustrated because we “couldn’t have sex until my appointment” and lastnight was the first time we’ve had sex in a month. I didn’t want to ruin it because I was actually in the mood. But I feel so bad for lying, and I know nothing will come of it. And I know we won’t have sex again until after my appointment to get the iud inserted. So should I feel bad? Am I a bad wife ?

Edit*

For all of you telling me I am a bad wife, I actually ended up telling him right after I made this post. He didn’t care. All he cared about was the fact that i was in pain. You all telling me i should have told him about how i felt, i should have mentioned that he already knew how the pill was effecting me. We have a 7 month old son and I was just worried he’d freak out. It was a split second decision that I honestly didn’t think about what I said before i said it. And for those of you saying we shouldn’t be married. You don’t know our life. You don’t know our relationship. You don’t have to be so mean when you don’t know the whole story. Just a piece of it.