should I test?

So I felt pregnant the past week, I just had a baby 3 1/2 months ago and since we have had unprotected sex, it would have been close to my ovulation but then 3-4 days before my period was due I started spotting, then the next morning I bled some but not nearly as heavy as usual and today the same thing some bleeding but not anything like usual. Sometimes it was very pink or odd colored like it was red but mixed with clear or white. Any how. No clots or anything which is also unusual. I'm not sure weather I should just blow it off as an odd period or test? When I was pregnant with my first I had no bleeding at all so. Plus I should mention I had a completely normal period last month, heavy, clots and dark red blood.