so i hooked up with my fwb towards the last day of my period (august 8th) and we didn't use protection. he pulled out and came on his hand and then we had sex again right after with no break. so there was a possibility that i may have gotten semen inside me. i'm also taking metfomin for pcos and i'm so worried that i might be pregnant....i've taken a test but it was negative and i know it's because it was too soon so when should i take the test? i'm supposed to get my period on the 1st.....