5 weeks Pregnant, took Acnotin (Isotretinoin) on 3rd week

My LMP was on July 28, 2016 and has taken Isotretinoin starting August 13, 2016. I had 20pcs 20MG from the latter date to September 02. I've found out that I am pregnant at 5 weeks on September 3. I am so much worried about the condition of my first baby. As if now, I don't feel something unusual inside my womb. Do you think my baby will still be healthy and will not be affected by that drug?

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