Welcome to HCM
As you got period on 25th,you need not to be much worried. It may be normal menstrual blood occurs upto 6th Aug.
Otherwise it may be abortion
bleeding as you not take the pill rightly and do unprotected sex.
So do a home pregnancy
test to confirm the present condition.
See the result and consult.
Take soft diet
and drink plenty fluid. Avoid stress
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