Fat gain or muscle gain? Help!

Hi! I’m confused about whether I’m going wrong in my fitness journey. I’m a 24 F and my current weight is 61 kg with a height of 158 cm. I don’t look chubby or fat but I also don’t look slim or toned. I’m somewhere in between.

Last year I weighed 65 kg. Then I was diagnosed with anemia and lost some weight (didn’t check how much). Later in December 2023 I was diagnosed with TB. I couldn’t eat much during that time which made me terribly weak. Checked my weight, I had lost 7 kg bringing me down to 58 kg. In January I started my TB medication which ended in July and my weight stayed around 58 kg from January to July. During those months I used to wake up around 2-3 p.m. (I slept at 6 a.m. due to late-night studying) and ate only two meals a day, lunch and dinner. Sometimes if I felt hungry I would eat at midnight. Approx 1000-1200 calories.

Now my routine has completely changed. In August 2024 I started working out, mainly doing weight training and walking. I now wake up at 7 a.m., have a pre-workout meal in the morning, go to the gym and then have a meal after my gym session. I have another meal around 2-3 p.m., followed by dinner and I do a night walk of around 7k-10k steps. I’m eating better than before. Approx 1800 calories. I go to the gym 6 days/week. It’s been about two months now my weight is 61 kg (I checked recently). Despite focusing on fat loss and strength gains l’ve gained 3 kg in two months. I understand fat gain and weight gain are two different things but they are related so I’m confused because I’m trying to lose fat but my weight keeps going up. I’ve checked my body measurements and they’re almost the same as before, no changes there.

So l’m wondering if the increase in my meal frequency is the reason for my weight gain or could there be another reason? Also, is this actual fat gain or could it be muscle gain? I want to lose fat but I feel like I’m going in the wrong direction. I am new to this so I'm not sure.

Can anyone help clarify what’s going on?