New road bike rider here...

I've had my bike for about 2 weeks and ride under 15 miles per ride with less than 60 miles on the bike but I'm experiencing some knee issues that are bad enough to keep me from wanting to ride again.

Some background on me and the bike...

• I'm a runner who's averaged 50 miles per month for years with no history of knee issues
• I had a basic "fit" done at the shop when buying my road bike. (saddle height, fore/aft, stem and bars) no measurements, just sitting me on the bike, letting me ride outside and making adjustments on the fly based on what they saw as I rode.
• I initially had platform pedals but went back for clipless and put the clips on myself during that first week. My clips have 6-7 degrees of float.
• I live in a hilly area where even a 10 mile ride will have multiple climbs. My last ride was under 15 miles with 600ft of elevation change according to my GPS. Climbs seem to put a lot of stress on my knees even in the smaller gears spinning a higher rpm.

Regarding the knee pain...

• Both of my knees "ache"...badly. No sharp pains, just feel tight and very achy all over. Left knee does seem worse.
• Pain is worse in the morning. They seem stiff and painful when waking in the morning but "loosen up" a bit and become a dull ache in the afternoon.
• It has been about three days since my last ride, and I don't plan on getting on the bike anytime soon because of the discomfort.

Is this something a fit will solve? I don't want to throw money away on a fit if it's not needed. I'm pretty happy with bar height and angle and wonder more about seat height/location and cleat adjustment.

Thanks for the help...