L.B.
Have you and your son's father gotten married yet? In July you referred to him as your "sons father", so I am assuming that you are not married.
Honestly, I would suggest that you get married before you guys have another child - I may just be a little old fashioned - but after 7+ years together and one son - it may be time to make the commitment and ensure that your child(ren) will be cared for. What does your boyfriend say about having another child out of wedlock? Does he want to? Then he needs to step up and marry you.
You were unsure in February about having a 2nd child - and you still seem unsure. So just wait on it. If you need encouragement to have another child, then you are not ready to do so.
You where pining over a "lost love" from over 10 years ago in July. Is this the impetus for having another child?
Get your life in order. Get your head straight. Get your relationship straight.
All before you bring another child into the world.