Should I do it?

We have been ttc for almost 2 years with nothing.. no pregnancy at all. A couple months ago we decided to stop trying while we work on saving money for the next round of doctors visits and tests.

My period came yesterday but was really light for the better part of the day. I had severe cramps which is normal for me but it always starts heavy and stays heavy for about 2 days. There was about 2 hours where it was heavy like normal but today it's completely gone. I dont even have spotting.

What are the chances that I actually am pregnant? Has anyone ever experienced this? I dont think it could be considered implantation bleeding because it was a mix of bright red, dark red..one small clot and even some brown. Should I take a test or is it a waste of money because this bleeding yesterday should just be considered my period. Ugh. What would you do?