Follow-up to question just posted. spotting on 11.23.20 and heavy (bright res / period type flow) 11.25.20 & 11.26.20 (broke out + ongoing cramps). how far back does plan b push ovulation / period back and do i need to take another pregnancy test?

Periods with Plan B: Periods can get very off schedule with the use of Plan B. Sounds like you had a period, albeit not your usual one. It is very unlikely you are pregnant. If it is time for her period, you can certainly do a pregnancy test, and if negative , repeat in 3-4 days. Don't be too concerned though, about the lack of normal period if pregnancy tests are negative after use of PlanB.