The last two months..

The last two months of my 4 months of ttc I have spotted the whole week on and off (3 or 4 days total of spotting) of my period instead of getting my regular flow I hardly even have to wear a panty liner. Is this normal ? I’ve taken pregnancy tests. They are negative. I was on the ring for almost a year and 3 years before that I had the nexplanon. I’m 20 and am worried about health issues. Should I be worried and see a doctor ? I called and she said it could be stress but I’m really not stressed.