A little advice or thoughts please.

Hi everyone, Sorry this is so long. As you can see in the group I have posted this in I am in my 30's and trying to conceive. I have had a beautiful bundle of joy last year and am so happy and grateful for becoming a first time mommy. I want to try for a second little one and being in my 30's I don't want to leave it too late. I had a period that ended on the 4th of Feb and since the 9th/10th of Feb I have had bright red blood only a little here and there. Not enough to use a period product but when wiping, the tissue is stained and I have to wipe again. This only happens twice a day. I am unsure what this could be. I am in a solid stable relationship. I don't really have much stress as I'm on maternity leave at the moment but going back soon and thats the main thing causing me any worry. Work is not brilliant and theres a situation at the work place I wish I didn’t have to return to. This has been addressed before I went on maternity leave. However, it is still happening and my boss thought at the time I was over reacting and the one person in question has recently become a supervisor. I am not on the contraceptive pill. I don't think I have any growths. I am still breastfeeding at the moment as well as weaning on food as little one is almost 11 months old. I'm so confused and wondered if anyone else has had this happen to them? Or if anyone knows what might be happening?