Thanks for your query.
I will try my best to provide you with best possible professional recommendations to your questions.
Technically speaking pre-ejaculate
does NOT actually contain sperm in and of itself but can pick up leftover sperm from the man's urethra
from previous ejaculations. The chances are EXTREMELY LOW low that a woman gets pregnant from pre-ejaculate. But, this does not mean there is NO chance a woman can get pregnant from pre-ejaculate.
I advice you to perform urine pregnancy
test, kit is available in all medical shop. All the instructions how to perform the test will be mentioned in the leaflet.
Use the first morning urine sample for performing test.
This test should be performed at least week after the missed period. Results are 98 to 99 % accurate. Depending upon the result you can take the necessary step.
I advice you for some kind of contraception
when you are not planning to be pregnant.
Yet again, I do hope that you have found something helpful and I will be glad to answer any further query.