I have question. You said you are 'still" tired.
Were you tired before becoming vegetarian?
Being vegetarian doesn't help fatigue if its not diet induced.
There are several reasons to be tired all the time.
Over worked. Low iron, chronic fatigue syndrome, depression, extreme stress.
As to diet related, are you eating enough calories? no matter what the diet, if you are eating lots of healthy salads, you won't be getting near enough calories. Salad ingredients are chock full of nutrients but notoriously low in calories.
You still need plenty of healthy carbohydrates(potatoes, rices, carrots, peas, dry beans) and iron(dry beans, nuts, seeds, diary and eggs)
Do a calorie count on what you eat in a day. If its under 1500-2000 calories a day, there is your reason for fatigue.
Are you drinking enough water? To find out, what color is your pee? If its pale lemon colored, you are fine..if its getting close to apple juice in color, you aren't getting enough liquids.
If all is well in all these things, see your doctor. Not all illnesses are diet related.