I would try to avoid eating on that side to prevent any food from getting into the socket. The gums heal quite rapidly so give it some time to close up. Meanwhile, do gargle and try to keep the socket clean. If food gets stuck in there, there'll be a bad taste and smell from the area so you want to keep it clean. If there is some food leftover in there, it will be ok as the gums will push or dissolve any material in there over time.
I forgot to mention I'm on penicillin now because the tooth was infected before extraction.