TMI! Baby Poop

So I am so sorry to do this but I don't think I can describe the colour properly. I started my 3 month old on probiotics, he has strictly breast milk from a bottle and ever since his poop has been this colour. Is this normal? Also I started taking all my vitamins again because I was getting run down and his frequency in poops has gone up to 3 times a day when it was at every other day. He is so much happier since starting all of this but I just want to make sure his poop is a regular colour and everything. Thanks!