Light bleeding

Tracie • I`m 28. Been together with my husband for 8 yrs and been married for 4 of those yrs. Have just started trying for a baby for past 11 months.
I've just gone to the toilet and when I wiped, there was a tiny amount of pinkish blood. I've never had this before in my entire life. I'm 28 and been ttc since January this yr with my husband. According to glow, I'm CD 22 today and normally have a 33-35 day cycle but my period that came this month was only 28 days after last month's period which isn't normal for me. My period this month also came a week early according to glow which also isn't normal. Normally my period is in time to my apps give or take a few days. My period never starts on the actual Fay my apps say, but always starts within that same week. Anyone have any ideas about this??