you can spread Diatomaceous earth around the plants and make traps with a tuna can filled with vegetable oil and some kind of attractant like cat food, honey, soy sauce and bury the can in the dirt in the garden. take a toilet paper towel roll and wet it and lay on the ground next to the plant and in the morning get the roll and throw it away.

Uh oh, classic herbicide (weedkiller) damage. If you or someone else didn't spray anywhere in the vicinity, look at this about contaminated compost & manure from WSU: http://www.puyallup.wsu.edu/soilmgmt/Clopyralid.htm Be certain to read the info about doing a bioassay. It's easy to do and will rule in or out the manure you used. Here is a link that might be useful: contamainated compost/manure

I think the problem may be related to not too much water, but in fact that the water level is not consistant. I know that mature tomato plants can use up to 5 gallons of water a day. You appear to have very small pots and even though they are getting water ever few days they in fact may be stressed because not getting enough water. I have Earth Boxes on my porch and also plant in garden. I put in an Early Girl first week of February with a Water Wall around it and am watering it every other day and I keep a water tray under the pot with water constantly keeping the soil moist. I use Garrett Juice Plus,Thrive, and Plant Wash (all Organic). Been using for several years and the Plant Wash will do away with you pest problems. I mix all of it up in a gallon of water and water all plants with it and rarely have any problems. Even moisture in soil is key to releaving stress to any plant. (If you want a good organic program go to (TheDirtDoctor.com) Has a link to his programs on weekend that gives great Organic Gardening Advise).

Likely if you eat tomatoes from the store they are production tomatoes. 1. They won't have the taste like a good gardener hybrid or heirloom tomato (in other word they tastes like cardboard). 2. They are hybrid, when you replant a seed from a hybrid plant, it won't be exactly like the original plant, it will have different characteristic and may not taste as good or have desired traits. I would rather order some seeds online and grow some dwarf tomato instead. If you intend to grow indoor you will need some good lighting and space. Something like this is minimum I would recommend for full size tomato indoor: https://www.1000bulbs.com/product/8256/FC105-S50OD.htm. So as you can see, tomato need lots of light which isn't not going to work in a single room dorm. Not only that, they need lots of soil, at least a 5 gallon container. So it's better off growing something like lettuce or basil indoor, or look for a dwarf or microdwarf tomato variety. Some variety to consider are: Red Robin, Tiny Tim, Silvery Fire Tree. For indoor potting soil, make sure you ask question and find the right potting soil that does not smell and perhaps pasteurized for indoor use, otherwise it will be an unpleasant experience. I don't buy potting soil, but I know "FoxFarm's Potting Soil" have good reputation so you may want to check them out, but I don't know how it'll smell. In my bedrooom I have an "AeroGarden Extra LED" that let me grow vegetable hydroponically, and it's LED light is bright enough to provide light for some extra plants in smaller container next to it. It is full spectrum and would be adequate for small dwarf tomatoes. It have a timer and shuts off after 12-16 hours. It is also very easy to make your own affordable indoor hydroponic setup. However, considering you live in a dorm, I don't know if you may have issues with campus authority who will be concerned with cannabis growing which is quite popular with hydroponic growing (not that I'm trying to give an idea).