Recovery after typhoid. Still weak?

How much time body takes to recover from typhoid after effect without medicine. I completed my antibiotic and gastric course 17 days ago. Still I have slight weakness, occational cold followed by slight headache. After completion of course I had sort of gases and indigestion and that is now good. Still I am taking precaution on my diet. I have started lite workout where I do stretches and light weight lifting. According to me it is making me feel better but don't know if I should do it or not. Presently I am taking (1/2tsp asgwagandha, 1/2tsp shatavar,) both with milk at night, multivitamin after breakfast, manol nutra after lunch and Sudarshan ghanvati 1 tab 3 times a day. So how much time body can take to recover from weakness and occational colds. And is my immune system still weak?