Constipation after hair transplant. Any suggestions ?

Hi, while I never thought much about it at the time, back at about 7 days post op (maybe 5 days, but I think 7), I had pretty bad constipation caused by taking tramadol. I never bashed my head or anything, but I definitely struggled and strained while trying to use the bathroom. Can this affect the grafts in anyway? My surgeon said it's fine, but I think paranoia is getting the best of me. Thank you.