should i be worried?

okay so last monday, i lost my birth control pack. i only had 2 more days left anyway (and for some reason my back up hadn’t come in yet) so I just went and started doing the placebo week instead (i just didnt take anything since I didn’t have it). i started back up another pack on sunday (so, ig technically a day early) and then had sex monday night (last night) and he accidentally didn’t pull out in time. my ex and i used to go raw a lot and he used to come in me like every time bc i was on the pill, but im kinda nervous now. would those two days missed on the last cycle fuck it up? should i be on my way somewhere to buy a plan B?