D.P.
Call you physician ASAP. Do not wait any longer. Discuss details of exactly what is going on with him or her. If you do not have a doctor, go to the nearest ER.
If you are, or ever find yourself, in fear for your safety or the safety of your kids, please call 9-1-1 immediatley.
You do not go into detail in your post but you references to being at "wits end" as well as "fearing for yourself" concern me.
You can call the Parenting Warmline at:
###-###-#### or 1-877-WARMLYN (inside Allegheny County)
1-800-641-4546 (outside of Allegheny County)
Or check out their website at http://www.familyresourcesofpa.org/WARMLINE.html