When did you start showing?

I took a early test on March 16th and 18th and the last test I took was on March 31st. I haven’t tested since. I had like 1 day of spotting on the 2nd of April and my period is usually 4 days long. The spotting was pinkish red.

These are my results.

Top 16th, middle 18th, bottom 31st

Should I test again one more time?