Your lagan is Sagittarius and rashi is Aquarius. Ketu is presently in the 12th house of your transit chart. You are also passing through a period of Shani sade satti. Shani sade satti is never good on the health front. As per your chart you may need to take medication for a long time. Consult a good doctor and get your medical test done. As this is an astrology website and not a medical website, giving medical advice is not appropriate. However, you should do remedies of Shani satti given below.
1. Read Hanuman Chalisa daily
2. Visit Shani temple every Saturdays
Blessings,
Navneet Khanna
Astrologer