Confused

I had a suspected misscarage about a month ago it was quite a lot of blood but I don’t if it could of been implantation bleeding they said if it was a misscarage it was very early like 2/3 weeks but I’ve been having really bad headaches and today I’ve been sick and I’ve been eating lots more I had a baby 7 months ago if I was pregnant it wouldn’t be ideal but I’d still love the baby like I do my little girl now, anyone had a similar experience or have any advice