I have regular cycle of 26-33 days from past 2 years. My last periods was on 12th july. On 30th july 2016. I.e on the 19th day of my cycle. I engaged in a sexual act with my fiance. We did not have sex. But we stimulated each other with hands. We were on clothes. I stimulated his penis with my hands. N.which was wet with precum. He stimulated me with his hands. N.he had not ejected. But I doubt if the precum can cause pregnancy. But before the act started he had peed in the loo. Now on 7th august I got my periods. Which is in my usual tym of 26 days. Today is the second day of my period. But this time I am having dizziness. And also my breast is paining. So just wanted to know whether is this my normal period or is it implantation bleeding. . Please help me as we are not ready for a baby now. Please guide me with you answer as this worry is constantly killing me day by day. Please please help me as soon as possible. I do not want to get pregnant now. This is the last tym I would be engaged in such a foolish act.