High heart beat due to ASO titer. This.

Hello, I was diagnosed with typhoid on 20th August and after 5 days when I completed my medication a new fever arise and I was getting fever 2-3 times a day at that time. Then I went again to the doctor again and he told me to get an ASO titer test and it was positive. After that he gave me a few medicine, injection and after a week I have started taking pendiure injections. I was having a fever daily with khaansi(phelgum) and my body started weakening. I recovered from that in 1 month and my heart beat is beating around 105-130 regularly from a few weeks. (I have also lost 16kg weight due to dieting from april to july) I need to know the reason why my heart is beating so fast and sometimes I feel uneasy due to this.