Can you provide a little more info? Like age and height? Also, are you weighing all solids and measuring all liquids? Are you eating back exercise calories?

It's fairly unlikely you're gaining enough muscle mass to offset weight loss unless you're eating either at or above your TDEE.

I plugged your data into a few different TDEE calculators and according to all of them you could be eating as high as 1800 a day and still be losing weight at your current weight and height.

When did you start re-incorporating carbs versus when your weight plateaued? Also how recently did you increase your calories? Water weight due to replenishing your glycogen stores is a real thing and could be responsible for the scale being stuck.

When did you start working out? Exercising, especially if you were previously sedentary, is a really good way to make your body retain water since it needs the additional water to repair the muscle tissue. Something similar to this happened to me last week. My weight had been plateaued for close to a month. I did a deload week (decreased the amount of weight I'm lifting to maybe 50% of my max) and I ended up dropping almost 2 pounds. Water weight is tricky like that.

Lastly, it is possible that you're not logging as accurately as you think you are and you've fallen victim to calorie creep. I know that's the answer that people LEAST like to hear, but 9 times out of 10 it is the correct one.

You're correct that you could be eating more. As a female, I know we are constantly told to eat LESS, but in your case an increase of calories wouldn't hurt you if you're truly sticking to the 1450 a day with your current activity level. Keep in mind if you do bump up your calories, it is likely you'll see either a gain or another plateau since you're increasing the volume of food. Over the course of a few weeks that SHOULD even back out. Psychologically I know how hard it is to see the scale go up when you want it to go down, but it is a mental hurdle you have to work on. I've been there, I know how tough it is.

I've also read the increasing calories when severely plateaued can aid in breaking it by 'boosting' or 'shocking' the metabolism, but I honestly don't know how much of that is crap and how much is true, so take that with a grain of salt.

Adding back the carbs will definitely result in your weight loss stalling, especially since carbs are what causes you to create and store glycogen (and thus water) in your muscles. If you went from a very low carb level say 30g-50g or less a day, and bumped it up to 100g or more a day, you WILL see that on the scale. It is almost certainly all water weight though.