I Had Sex Yesterday But Not Properly, It Didn't Go

I had sex yesterday but not properly, it didn't go in all the way and I only put it in a few times, the guy I had sex with did not cum, is it worth getting the morning after pill or are there some food or something I can use in replacement for the pill since I don't think I will be able to get my hands on one by the next few days. I heard sperm can only servive in an alkaline environment so if I drank lemon juice would that help