My husband and I were trying for well over a year to get pregnant and what finally worked for us was having intercourse two days before, the day of, and two days after ovualtion and Bingo! I got pregnant.
I bought a home preg. test when I was just over a week late with my period. The signs I was experiencing at that time (being a week late) were extreme fatigue, very emotional and cranky and that's about it. Soon after that I noticed my breasts getting slightly tender, a bit of a weight gain and was very hungry all the time!
The only way the three of you will know for sure if you are pregnant is
to have your doctor do a blood test......no more guessing.