Hi there, I have understood your concern. I wwill suggest you the best possible treatment options. 
1 ) First of all do not panic. 
2 ) As you have taken enough precautions you need not worry about the 
pregnancy in last cycle.
3 ) In the month of June , was there any chance of having unprotected sex act?
If not, then you need not worry. You can simply wait for the onset of periods. 
4 ) If you have not observed any 
contraceptive method in the month of June, then I will suggest you to get morning's first sample of urine tested for pregnancy. 
Even if you are pregnant, you can opt for termination of pregnancy with medicines safely till 9 weeks of pregnancy under medical supervision. 
If test is negative, you can simply wait for the onset of periods. 
I hope this answer helps you. 
Thanks. 
Dr. Purushottam Neurgaonkar.