Can headaches be a pregnancy symptom? I don't know if this info will help but my boyfriend and I had sex the weekend of Sept. 11th and he finished inside me 3 times that weekend.. Then we had sex again this past weekend (Sept. 18th) and he finished inside me 5 times that weekend... I took 2 pregnancy test Friday (Sept. 25) and both of them said negative but my coworker said she didn't get a positive pregnancy test until she was 9 days late from her period... I'm not suppose to start my period until Oct. 7th..