"The Flea"

My interpretation of this poem is that the flea represents a baby.  I believe that the first stanza is about the woman denying the the narrator sex, yet once the commit the sin of premarital sex they conceive a baby.  When it talks about the two bloods being mingled, I protrayed that as them having sexual intercourse and the baby being conceived through the combination of their "blood".  After they commit this sin, they do not feel any guilt or shame, they would rather celebrate.  From the second stanza, it seems as if the couple is unmarried and the parents do not agree with their relationship or with them having a baby.  Between the second and third stanzas, I find that the couple is contemplating committing suicide and taking the innocent child's life too.  Because of the sin, they feel like they will forever be ridden with the guilt of what they did and the child is just an obvious reminder of it.