Hi I'm 21 years old and a new mum to a 1yr old before I had my son my period was clock work I had no issues ... after giving birth to my son my period came back normal and stayed fine for a few months I didn't gain weight during my pregnancy but after having my son I was eating quite a lot and gained a lot of weight since then my period has been very off missing two months of having a period and then it will start back to normal again and I'll have 33day cycles and then it will disappear like this month I'm 5days late and last month I had a normal period cycle I've done 2 pregnancy test and all negative