I remember those anxious days of waiting! For me, the actual symptoms like mild nausea and breast tenderness started only about 2 weeks after, right around my missed period. Don't stress too much right now, give your body some time.
Honestly, with my sleep-deprived brain, I feel like symptoms took at least 2 to 3 weeks to show up, around when my period was missed. Before that, any "symptom" was probably just my mind playing tricks on me because of gas!
Because of my thyroid issues, my cycles were irregular and I had to follow up with my doctor constantly. She told me that pregnancy symptoms typically show up only after implantation, which is about 10-14 days after sex. Keep a track of your dates and talk to your gynac if your period is late.
It takes at least 10 to 14 days after intercourse for the fertilized egg to implant and start producing pregnancy hormones. Any symptoms before your missed period are rare and usually just PMS. Wait till your missed period date and then take a home test for a reliable result.