Little confused 😣

So my period came on early, May 31-June 3rd, only a few days when it supposed to be June 2-5th. Even after my period is off I still have pelvic cramps, extreme nausea, headache everyday, sore boobs and nipples. So I took a test with fmu and can see a faint line, is there a chance I could be pregnant even tho I got my period? Also, if I am pregnant date of conception would be May 10th if that matters