relaxin

This was a big week - we got the results back on the CVS procedure and found out the sex of our baby! Also, I learned about "underfill" and why I feel so drained. Literally, it turns out.
At only eight weeks into my pregnancy I thought there wasn't much to worry about other than eating right. Wow, was I wrong. So wrong I could barely walk for a few days from my injured back.
You may have heard of the hormone relaxin in reference to pregnant women, but we all have it - men and women. Does it and your cycle play a part in injury, specifically ACL injury, in women?