I don't know what to do

I'm on the pill. I'm on the last day of my 7 day break, I had sex and he pulled out, but some of his cum dropped into my labia (I didn't see) and he didn't tell me until I had already put all my clothes back on, he thought I'd be protected from the pill.

The problem is I haven't got another pack of pills and can't get any until the 11th.

All my local sexual health clinics are shut tomorrow because it's Sunday, so I would have to pay like £30 for plan B, which I haven't got.

I'm fucking terrified and don't know what to do😣😭