Hi and thanks for the query. Pregnancy issues always raises anxiety. Whenever you have unprotected sex, the chances of becoming pregnant are real and even higher if it were during your fertile period. With a cycle which has not been very consistent, I am not comfortable enough to rely on your menstrual history to tell whether you were actually on your fertile period or not. Pregnancy often comes with some early symptoms like body weakness, nausea, vomiting, lack of appetite, swollen and painful breasts etc. If you have these symptoms, then pregnancy may be a possibility. To get a definitive answer, urine pregnancy tests become positive within two weeks after date of pregnancy. if you are pregnant, yours should be by now. I will suggest that you get a urine pregnancy test and clear the doubts. it is simple, not expensive, rapid and give good results. If you don t get answers, then please consult you physician to find out why your menses have not come. If you want to get pregnant now, then continue to have unprotected sex. However, if you don t wish to, please use a talk with your doctor about contraception options and wish is best for you. Also, always try to use protection during intercourse so as to reduce the risk of sexually transmitted diseases, too. I hope this guides you and answers your question. if you need more information, please let me know. Thanks.