TTC in early 20's

I'm 22 years old. I have been using glow for about a month. My husband TTC during our fertile window which was November 30th-December 6th. My period came the day I expected it, I was a little upset. The whole week to two weeks before I was experiencing bloating, gas, tender boobs(mostly underarms), nausea w/o vomiting, headaches, lower back pain, and fatigue. I have had light cramps with my period. I had to use maybe 2 pads, but now I only see bleeding when I use the restroom, I don't see any on a pad. Should I take a pregnancy test or is it just a light period?