Can I use Beclomethasone Dipropionate, Miconazole Nitrate & Neomycin Sulphate cream while planning to get pregnant. Does it kills sperms also?

Many meds. You must see your Gynecologist about this as soon as you can get an appointment. Three meds in a healthy woman are too many but in your case may be necessary. The Gynecologist will work you through this.