You need to be gentle with yourself after the surgery and follow your doctor's orders to a "T" so that you don't open the incision.
You'll have plenty of opportunity to start exercising again when you're fully recovered. Be sure not to overdo it in an attempt to 'catch up' with your exercise.
You say that you hate your body - but I see that you have lost over 100 lbs. That's a fantastic achievement. We need to learn to love and cherish our bodies whatever shape they are in - they're the only ones we have, after all! Our bodies work so hard getting us around, digesting our food, working, playing, etc., etc. Only airbrushed models look perfect on the outside.
I hope your surgery goes well and that you're soon back on track.