help please

So I've had a yeast infection in the past but I'm fine now. Wednesday gone I had sex with my boyfriend, pull out method I know stupid but today I felt normal discharges but it kinda smells. Now yesterday I went in the beach and I put on the same cream I used for my yeast infection cause the sand in my swimsuit was irritating me so just in case but idk why it kinda smells down there. Not terrible terrible but what does it mean???