Sex one day before ovulation

I’ve always wanted to get pregnant but after 1 miscarriage and 1 year of trying it gets a little frustrating especially since My boyfriend works offshore and we can only have sex when he’s home... last night my app told me I was 27% fertile so we had sex in hopes of making a baby well he left this morning and my app says today’s my most fertile day (33%) now my discharge is thicker so I’m thinking today is my peek day... can I still be pregnant even though we did last night and not today