I Am Currently Taking Solodyn (minocycline) For Acne. I Had

I am currently taking Solodyn (minocycline) for acne. I had a slip up with my boyfriend last night and want to take Plan B. Will the antibiotic make the Plan B less effective? I already took the minocycline at 8AM and I'm supposed to take it again at 8PM, but can I take the Plan B now? Or should I stop taking the minocycline for a few days?