What if you start Provera to induce period and later find out that you were pregnent?

Has this happened to anyone? Actually, I have my GUN apptment tomorrow on CD 32 after taking 50 MG clomid and no ovulation. Tomorrow I will be starting my provera. We last BD on last sunday 21st March, My temps have been slightly up since then but ovulation is not yet detected by FF. So if I start Provera tomorrow and then find out that I am preg (which is very unlikely, but still). Will there be any -ve effects on the baby? Pls let me know.