Early signs of pregnancy!

So I know everyone is different, and I've already had a baby shes nine months old but with her I didn't get any symptoms I found out when I was 13 weeks gone. 
But it's 2 days till my period is due, I had Sex with my partner start of the month a couple days later I started to bleed but only for a day if that. 
Yesterday I got this metal taste in my mouth all day I brushed my teeth like 5 times to try to get rid of it. Plus, I was in the bath and went to clean my boobs as you do, and some milk come out.(I never Breast feed my one. Woke up this morning and felt so so sick. 
Sorry for the long essay 😂