I had unprotected sex and right after like 15 mins I took the first plan b tablet then 45 mins to an hour had unprotected sex again then took the second pill 13 hours later instead of 12 like it says on the box?? Can I become pregnant or was I still protected by the first pill because it was only 45 mins after I took the first pill when I had unprotected sex again should I take another set just to be safe I'm still within the 72 hour time frame??