See the fun thing for me is that I am away at college and do not have a doctor in the area and hadn't gotten one since there aren't any close that are in our insurance network. I got an apartment for the summer because when I go home my headache is so bad I can't function. That's why I'm glad to have found this forum. I think you are probably right in that it is just everything healing, thank you.
I found that if I layed down flat, it was painful. I had to prop up my feet or head to relieve it. I think the random twinges of pain are probably your nerves and muscles healing. There's alot more to the healing process than we realize. If you feel there's something wrong it never hurts to give your dr a call.
Even while laying down in addition to just feeling sore I occasionally get random pains that are sharper than the general soreness. I'm guessing this is normal since surgery is traumatic to the surrounding muscles as well as incision site?
I think I only needed strong pain killers for less than a week, but I didn't feel healed for almost a month. My dr said not to lift anything over 20-30 lbs for 6 weeks. I usually felt a pulling sensation if I was overdoing it, but when I was on the stronger meds. I didn't know I overdid it until the meds wore off so be careful and take of yourself.