Can anyone take antibiotics without alot of trouble?

I had to go on some for a few days prior to surgery because I had a low-grade temp and perhaps a slightly elevated white count (it was a quickie urinalysis, so not completely positive). I told the nurse that antibiotics do a number on me and she said if they messed me up after surgery, to just quit taking them. It was only a 7-day supply anyway--more to prep me than to fix me afterwards (I'd had a cold just prior to surgery and I know the fever was from it; and, of course, antibiotics won't help a cold anyhow). I took them up until surgery and one afterwards but then I quit them. My pain meds made me constipated, but after I got over that inital bout, I'm having more D than usual and I wonder if it's not the antibiotics I took, despite taking a probiotic with every pill. So I've gone back on the probiotics just in case; hopefully all of my bowel problems are just related to the surgery and all the meds I was on and I'll be back to normal in a few days. Oh, that and I ate a lot of junk food just after surgery because I felt like I deserved it, lol.

I can't imagine why it would lessen the effect of the antibiotic. The antibiotic is in there to kill everything. The probiotic is in there to give you good things. Unless the antibiotic gets so hung up on killing all of your good things that it doesn't take the time to kill your bad things, I don't see what the harm is. If anything, I would be more concerned that I was lessening the chances of my probiotic by taking it at the same time. But I also know that if I don't take them together, I'll forget to take one or both, so better to have some fewer good things get in than to forget and have none at all.