Hi I Use To Cone In Periods On 23rd Last

Hi I use to cone in periods on 23rd last month I had periods but on very next day I had fever I took the medicine for fever and my bleeding stopped. After that I suffered from dengue treatment last up to 15 days then I had oral sex in which my husband had just fingered in my vagina he is sure that whether the sperm was on finger or but his finger was exposed to air for 10-15min then also I took the I pill on 20nov. Generally I user to be in periods 2days early of my periods date. But till today i am not in periods niether i am feeling like that Please help me whether I am pregnent or not?