Period whilst Pregnant??

Hi,

i had unprotected Sex with my boyfriend about 9 weeks ago, i did have my next period after that, i then had an accident with my boyfriend nearly 4 weeks ago ( i am not on any contraception ) to which i did have a day of bleeding last week, which was around the time my period would of been due.

I have had enlarged sore breast’s and sensitive nipples for nearly 3 weeks, and had symptom’s of nausea at times aswell as tiredness.

could i be early pregnant? so early that none of the 3 pregnancy tests i have done the last few weeks havent picked up on yet??

When you google, it tells you so much different i formation, i dont know what is right?

Thanks,