Scared

I had a c-section almost 9 months ago now and I'm worried about it having caused me to be infertile. I'm not necessarily trying to get pregnant right now but my husband and I had sex twice during my fertile week, once the day before I ovulated, and I just started my period. I don't understand. It was so easy to get pregnant the first time. It only took one time. I don't know, maybe I'm worried about nothing. I read online that in some cases c-sections can cause infertility. I just need to know that I am going to be able to get pregnant again. I really want to have another baby. I'm just so scared.