no condom

One positive test, one negative test: am I pregnant or not?

My boyfriend and I had sex without a condom 2 times and when he cummed in me the first time I thought I was pregnant and I took a test and it said positive and I took another one of a different brand and it said negative so I didn't worry about it the second time he cummed in me I got my period the next day could I be pregnant now?...