Was 3 weeks late and now just started my period.

Hi everyone! So my husband and I have been trying to get pregnant for the last 4-5 months with no luck. I thought this month I might actually be pregnant as I was 3 weeks late for my period (I track my periods and they are always on time like clockwork) and I've been feeling extra hormonal. I had taken like 5 pregnancy tests over the 3 weeks and all negative but that was the same with my last pregnancy. It took a while to show up on a test. Last night I started bleeding. :(. I'm not sure if it is my period or implantation bleeding. Has anyone ever had that before? Im going to be so disappointed if I'm not pregnant but I'm afraid that may be the case.