Knowing about pregnancy. Please reply!

My fiance and i didnt have any intercourse at all there was no insertion of penis at all but there was some precum on his fingers and because it was there on his fingers we though it could have been inside me also and as we were not sure i took unwanted 72 within 3 hours that is on 23rd november and my periods were supposed to come on 6th december but it came on 4th december,i also got my periods before 2 days that is 4th december from my actual period date which was 6th december it was regular period and on 3rd day of period i didnt bleed from evening till next day morning but on next day morning i was bleeding normally again for entire day and on next day which is my 5th day of period my bleeding has stopped. Also i took a pregnancy test on 4th day of my periods that is on 14th day after having unwanted 72 and it was negative. I would also like to add i had a viral fever on 3rd of periods so i was on heavy medication for fever. is there any chance of pregnancy please reply