I just had a baby 4 months ago and I am up to reenlist, my postpartum profile is expired, can I still reenlist?

According to regulation (I forget the AR offhand) you have 6 months from your child's DOB before you have to take a record APFT. Aside from getting a record APFT on file, and without knowing any other details of your situation, I don't see any reason why you wouldn't be allowed to reenlist.

Yes, if otherwise qualified.

Stop by the 10th Mountain Division (LI) & Fort Drum Retention Office for assistance...I believe SGM (Join to see) can assist you.

https://www.facebook.com/10thMountainDivisionRetention

Your question should be directed to your unit Re-enlistment NCO, a lot depends on favorable work reports, because with the force reductions it comes down to work performance (NCOER).