I had this several times with DS2 from 12 weeks onwards - periods of about one day and then they would stop; was my period trying to come back but didnt come back properly until I started mix feeding at 6 months
Yes this is normal. Disaapointing but normal. My periods returned at 6 weeks with DS1. That is why breastfeeding is not a reliable contraceptive!. Longest break I ever got with feeding babies was 4 months. Not fair is it.
Exactly the same happened to me with DD2, felt very cheated as was so looking forward to months without it. Also found that DD2 fussed alot more when AF came, think the milk must have tasted slightly different at that time of the month.