Not sure if I’m pregnant or not

Marta

My husband and I have been TTC. I’ve always had a regularly scheduled period lasting 5 days. We tried in March and my period was expected April 6-10. I got my period Saturday 4/11. It’s almost over and it’s the 4/13. Not sure if it’s period or implantation bleeding. I took a test on 4/9 and it was negative. Wondering if I should test, or wait until May 5th to see if my period comes on time?