im always on time with my periods ever since ive started at the age of 11 and never late! im usually 1 or 2 days early but this time im 12 days late i did a pregnancy test 2 days after i missed my period at home but it was negative last time we had a intercourse was 10 days before my due date was it to early to test, ive got breast tenderness and abit of lover pains with a backake,and feel sick but not vomiting, i have a 5 yr old but the test was postive in 2 days at a clinic at that time i cant remember if i had any of these feelings in the 1st couple of weeks at that time what should i do?