Confused

I had a miscarriage 9 months ago. I had to have the methotrexate injection which meant I couldn't ttc for six months. This is my second month ttc my rainbow baby. My period started on time last Tuesday and finished yesterday but it was lighter than normal. I'm feeling really tired and this morning I felt queasy and again this evening at the same times as I had with my previous two pregnancies. I am also still having cramps. I'm wondering if it is worth a test just to rule out whether there is any chance I might actually be pregnant