Pregnancy after five years?

I got married last august,i am 26 and from the caribbean and my husband is 48 from colorado. I have a son who is five but my husband had none from his previous marriage(too busy with careers). I have had relationships before my hubby but i never gotten pregnant after my son. I used yasmin contraceptive on and off in the past because of irregular periods but now i get my period every month. I love this man and i cant wait to see our gorgeous children.Thank You for your advise.