I have a question....after you have come out of ketosis, how long does it take to get back into it? Also, can taking a pain killer called Hydroc/apap have any effect on this?

I was doing great, showing maroon on the strips, then at passover, I had 1/8 slice pecan pie and 1 matza ball in my soup. That was on Thursday of last week. I came out of Ketosis on Saturday and have not been able to get back into it although I am following the instructions totally. My husband is also taking the same medications as I am because of a tooth as well. The antibiotic we are taking is Trimox, and he hasn't been able to get into ketosis, so I'm wondering if our meds are the cause. If not, how long before we get back into it, and should we drop some more carbs? We are staying under 20 g a day.

Thanks.