Cramping & I thought I was pregnant

Haley • I am 18 my boyfriend is 22. We have been TTC for about 1 1/2 months now. I can`t wait to be a mommy to our children.
I took a few tests that all gave me faint lines so I thought I finally got what I've been wanting but I've been getting slight cramps for the last 2 days. Is that normal?