Physical job after tummy tuck

So my doctor recently gave me the ok to workout again at my 6 week check up but take it easy and not to push myself too far to the point it hurts for my Tummy Tuck. Since then I did yard work and found some blood coming out of my outside scar. My friend said it’s probably a inside suture trying to push threw. I started working at a mechanic shop working on vehicles and at the end of the day my tummy muscles are so sore. Just wondering if I’m doing to much too soon working on vehicles. It requires a lot of wrenching using a lot of core strength and body weight to break open bolts, change tires or parts and bending over into engine compartments and working under big trucks and practically doing a crunch to get myself back up after working under a big truck off of a creeper bored that moves me around under the vehicle. Surgery was Feb 26. Should I have waited longer to start working such a physical job? I’m in pain more and more lately especially after work my muscles are starting to hurt again sitting or getting up