16dpo negative test 2days missed period

Hi everyone as you know I’m 16dpo with a negative pregnancy and 2 days late. I don’t know if it’s early for me to have taken a pregnancy test. I’m just so confused on what’s happening to my body right now. I’ve been getting cramps that come and go which means that I have ovulated or that I’m getting my periods. I’ve had my implant taken out since July so I think my body would have been back to normal by now. If anyone has experienced this before please let me know because I am confused on what’s happening.