7days late, lower back pain, cramps, sleepy, want 2 vomit after I eat n whit milky discharg now when I poop its like im constipated, culd I be preg?

Can I be pregnant? You did not provide the most important information when asking this question so any answer will be pure speculation. The information missing is was your last period on time and of normal duration? Were you sexual during your fertile days? If you are seven days late why have you not had a home pregnancy test? If there is a change you are pregnant and not menopausal, it is time to test.