I'd contact a local extension agent to test the soil. If you don't have one, you can contact any college with an agriculture dept and they'll send you the stuff to collect the sample and when you send it back, they'll test it. They usually tell you what is in your soil and give recommendations.

i would go raised-bed also, some can grow pretty deep roots, and if u're growing any root veggies to eat i'd definitely make sure the raised bed is deep enough to keep you safe (my opinion, i'd go at least two feet). but u should still get the soil tested either way.

a fun thing you and your son could also do on top of the raised bed is "lasagna gardening". it takes longer, but may be a fun way to teach your son about decomposition and recycling.

I use old boiler crates for trellises on cukes--they make a great tripod. I have to acidify my soil (sulfur and coffee grounds)

That's a whole lot of work for a pregnant lady who will be going into labor as her garden is about ready to harvest. You might consider vegetable container gardening this year. You'll have to be creative and hunt up your containers, but it's pretty much like herb gardening in containers. Just on a bigger container scale.

You can do your tomatoes in 5gal buckets that you can likely beg from a local restaurant. Carrots and radishes and even the potatoes can grow well in old wash tubs. Even the cucumbers can grow up rather than across when carefully trained and given a lattice work type support (think like one would with ornamental gourds you might have seen growing up a fence). The gourds themselves for fall decorating might be fun for the little one to grow and help decorate with his 'harvest' come fall.

The container depending on where you place them might be easier on your back and growing tummy as it comes time for tending the growing produce.

After your soil is tested, next season if it passes the ok test you could do the ground thing. If it is ok but just needs amended, your local nursery can help you select the proper desires top soil, compost blah blah and even deliver it by 1/2 to full back of pick-up size loads (cheaper that way).

Some of the big box hardware store are also selling pre-ready raised bed garden frames. If you go that route you will still need to learn what soil you'll want to fill it with. Google raised bed gardening, vegetable container gardening, amending soil for gardening ect ect. If you're still not finding your answers, go plead at the local nursery (actual professional nursery, not Walmart, Lowes, Menards garden centers type places).

Just replace the top soil when you do the plantings. Also, I do tomatoes and strawberries in pots and they work great. Start reading gardening books.

It does sound like you need a new hobby. Also, go to the gym, they have good day cares and you can work out. I did that for myself, when BS was little and kept it up. He loved the day care and I needed things to do after my husband died.

I miss gardening.