i dint had sex but sperm was splitted on my stomach. i have a doubt that it went inside the vagina and also may be through fingers. i got the period around normal time only, and it was a heavy flow as compared to previous month. and i am getting head ache also. i know i got period but also i heard that women who gets pregnant but still has their period. i know its a stupid question but i am worried so please help me out.