Tomatoes are a lot tougher than most people think. If the plant is still robust looking all over, don't worry about it. Do put some holes in your container. Tomatoes need to be water evenly. Water them every other day and try to get the same amount of water on them. If it rains, skip a day. Uneven watering results in Blossom End Rot.
Good advise about something on your hands. If you use tobacco, wash your hands before touching the tomato plant or put on rubber gloves. I keep a box of surgical loves with my gardening equipment and put them on if I'm handling the plants.
Good luck with the tomatoes.
