Help! Thoughts?

Okay, to create this app I had to say I was pregnant, but I don’t think I am. My firstborn is almost 7 months old and my period is two days late. It started after I gave birth about 4 months postpartum and every month after it would come either the 8th or 9th. This month it hasn’t came yet. I’ve been having a few symptoms of a period like back cramps and shortness of breath but nothing so far. I heard the body is completely different after having a child.

Any thoughts? When should I take a pregnant test?