Insects covering my tomatoes!

[seanomac76]

This is my first attempt at growing tomatoes in containers. I have a Sun Gold, 2 Eary Girls, and 2 Better Boys. A couple of weeks ago I spotted several small black bugs with long clear wings. I assume they laid eggs because now I have these small clusters of black dots under the leaves. Today I noticed small green bugs (I assume aphids) and also small bright white bugs with wings (whiteflies?).

I didn't want to use chemicals, so I made a mixture of water and liquid dish soap. I also added some sesame oil since that was listed as an active ingredient on a container I saw at the store. So far it doesn't seem to have any effect.

Many of the leaves on two of my plants have leaves that droop and curl in. This seems to have happened recently. Could this be over or under watering or from the bugs?

Any suggestions to get rid of these insects and get the plants looking healthy again?