BFing 9 month old, irregular period, morning after pill?

Asking on here, simply because I’m not sure whether I should go to the chemist and get a morning after pill or not!!!! (Low key freaking out)

I’ve got an almost 9 month old, so not ready to have another baby just yet. Last night my partner and I had sex, I’m on the last day of my period. My periods have been every 2-3 weeks for the last 2 months and I’m still breastfeeding 3-4 times daily.

We used the pull out method 🤷🏼‍♀️🤦🏼‍♀️ Now I’m freaking out. Should I go get the pill just incase? SOS