on the 7 of october approx i had my period then on the 14 of october i had partially unprotected sex... the guy noticed that the condom had broken but he also hadnt came yet... so if anything was released it was just pre-cum. then on the 24 i started the pill... now it is the 14th of november and i havent finished the 21 day package yet and i havent had implantation bleeding or a period... just tender breasts which are signs of both a period and pregnancy... also.. i missed a pill one night then took it in the morning (should i have had a period then) so i need to know should i be really worried about this?