Help!

Can someone help me! Today I was supposed to start my period and I woke up this morning with white discharge and pink that was all for awhile then it started to bleed alittle more red but not enough for a tampon, and now it does that but then it goes to pink when I wipe or brown im so confused why it picks up alittle then slows way down to pink or brown! And my stomach hurts but it’s not like period pains at all this never happens to me, my period always comes on time with a regular flow