Should I take a test?

Okay so we have been TTC for 3 months now and I normally have AF for 5 days, usually from Sunday to Thursday. This past cycle I had light, watery bleeding (more than spotting but red enough for me to think period) from Saturday night to Sunday afternoon then nothing. No cramping, no other signs except I'm slightly more tired and hungry. Also, my hair is falling out way more than normal and my nails are way stronger than normal. I don't know if that has anything to do with it. Sso my question is should I take a test or wait until my next period in 21 days?