I had cramps today as I normally do when I get my period. So I went to the bathroom and peed. Along with my pee was some reddish brown liquid which I assumed was my period. Throughout the day I've peed another 2 times and both times a brownish liquid came out with my pee (old blood?) However, I've been wearing a panty liner all day and nothing has come out on it. When I wiped (sorry tmi), nothing came out on the toilet paper.

Is this my period? This has never happened to me before.