Should I test or wait it out?!?

Warning: Maybe TMI!

Ok so my husband and I have been trying to get pregnant since September. I went off the pill and I have been using a online calendar to predict when I would be ovulating, we would have sex every other day in that time frame. My periods have been normal except last month it was two days late, I got it on Christmas. Well it was brownish spotting for two days and regular flow the third day and back to spotting for the last day. I usually get my regular flow for 5 days and spotting for the last two. It has always been like that, even for the 2 months after I got off the pill. So anyway Thursday I was due for AF and it's been brown spotting for the past few days. Nothing heavy to even fill a panty liner. Anyway I was just wondering if maybe I should test for pregnancy. I didn't know if this happened to anyone else.

I don't have any other symptoms like cramps which I get when I have my period. I have very sore boobs and I have been sleeping A LOT! I have been falling asleep around 8pm and not waking up till after 6am.

Any input if much appreciated. Thanks