I would only question whether you really want to take a drug to deal with this. I'd think a talk therapist would be a better bet than just trying to hide from your justified feelings by taking a drug if you're still functioning okay with what you have to do each day. Doctors are often very quick on the draw with drugs because they're the easiest thing to do, but numbing yourself won't help and might hurt in the long run. If you're having trouble functioning, then a medication might be appropriate, but this is something you have to deal with and sadness is an appropriate reaction. In my opinion, I'd try talking it out with a professional before turning to medication; if you need it the drugs aren't going anywhere. As to your question about experience with the drug, everyone has a different experience; they don't affect us the same as we're all individuals. Prozac has been a miracle to some, a nuisance to others. It did absolutely nothing for me at all, no effects, no side effects. So we can't unfortunately predict how you will fare on any particular medication.
I'm so sorry you and your husband are going through this. We're here to support you anyway we can.
Your Dr started you off on a low dose of Prozac, which in my opinion is good. Many people do very well on this med. You may have some start up side effects at first like a little nausea and headaches but those side effects usually go away in a few days.
Most DRs want to give these meds about 6 weeks to see if they're helping.You can feel much better before then though. If you would happen to have any bothersome side effects there are several other different meds to try.