Jamaica

So my husband got a free trip to Jamaica March through his work last minute. We had been trying when we found out so we kind of just stopped trying and planned on going. I told all of my coworkers about it and took the week off. Well come to find out, just the few days of trying worked and I'm pregnant! I'm super excited but now I can't go to Jamaica (due to the Zika concern) and I dont know how to handle it with my work/family. I'll only be 7 weeks by the time we were supposed to go, now everyone will be suspicious if I cancel but I dont want to tell my work I'm pregnant just yet, it's too early. What should I do? I cant lie, I'm terrible at it, but I dont feel comfortable telling my work. My family is going to know something is up...I'm in a pickle! I was debating going somewhere just to get away while my husband goes to Jamaica, and just tell everyone I went. But I know everyone will ask me how it was and to tell them about Jamaica. Ahhh help!