help.. am I pregnant?

so last month I had unprotected sex, he didn't cum in me because it was less than a second because he just finished round one. he pulled out & he said he had white stuff on the tip but like two days from that Saturday I got my period but it was weird since it came really early & it was light & then went away fast. then I home tested twice both negative. then now I got my period & it was light but like dark I don't bleed so much, maybe I'm still paranoid. I started around the same time as last month. my mom told me her period time changed & she would tell me with the person you live your period is kinda the same. her's started in the beginning & I started on Wednesday of this week & last month I started on a Monday around this time. I don't know if I could be pregnant & still have my period or it's just my period. can someone help me? I need some peace of mind. 😭😭