Tmi maybe buy needing some advice.

OK so my period was due yesterday and then glow moved it back until tomorrow when I put that I was late. Yesterday like every third time I went to the restroom I wiped and there was light pink blood very very little today it has turned to a light yellowish brown mucus type discharge only when I wipe though. Could this be AF getting ready to start or could this be early pregnancy sign. I have a 7 year old, I am married and we have been TTC for 4 years now. Experience a couple of miscarriages and found his sperm count was low and my hormones were off now taking some herbs and the past 4 months my periods are 35 to 37 days apart. His speem could t has been back to normal for 2 months. Thank you and please no one be rude I am just asking a question