Precum can contain sperms....and so there may be chance of pregnancy ....Only if you have ovulated in those days.....
Wait for your menses. If they come you are not
pregnant.
But if your menses get delayed, do a urine test on 1st urine passed in morning of 16 January and get it done in a reputed lab.
If its negative you are not pregnant but if positive you must seek a gynecologist to recheck and explore options of doing abortion