Just re read your comment lol if you had period in February then you wouldn't be pragmatic from January so you wouldn't have any symptoms yet as you would be a few days if that preggers
If you got pregnant from the January sex then you would test positive personally I didn't have any symptoms untill I found out just felt a little bit iffy through out the day but not enough to realise I was pregnant untill 10 weeks. Didn't have any cramps or discharge. it takes twelve days minimum from the day you had unprotected sex for the egg to implant then two days for it to double the hcg from placenta which shows up in the urine making the test positive.