Breastfeeding and sex mishap 🤦🏻‍♀️

I know everyone hates these questions (I do too) but im seriously freaking out. 3.5m pp and I am EBF. also on the mini pill. Well the pill has been giving me AWFUL mood swings and yesterday I didnt take it, but then today I started it back again and took todays pill as well. Of course my husband came in me today too during sex.

do i need plan b? Can I even take plan b while breastfeeding?? Can I put in a VCF now? Or am I fine bc im breastfeeding & there’s already a lessened chance of pregnancy. Please help I do noooot want another baby yet!