If your cycle is a 35 day cycle then the ovulation is likely to occur by 25-28 th november making it a fertile period. So , if you had unprotected intercourse on 1st december , then you were well within your fertile period and chances are that you may get pregnant. If you have already missed your period by now and having early pregnancy symptoms , then it would be best to opt for a urine pregnancy test to confirm or rule out pregnancy first.
I hope i have answered your query in detail,
wishing you good health ,
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