Advice please

I don’t know if this is the right place to post this but iv been ttc for the last year and a half and got pregnant but I lost it 4 months ago and we’ve been trying again but I’m a little confused because I wasn’t supposed to get my period for another week or more and it started on day 15 instead of between Day 28-35 and it’s lasting longer than a normal period but alot lighter than a normal one can anyone help me to why this is or is it normal? Really confused right now