Hi, I Am 15 Weeks Pregnant. My Doctor Suggested Me

Hi, I am 15 weeks pregnant. My doctor suggested me to take Feronia-XT and Macalvit-500 . I am having them from the day before yesterday night, And from Yesterday, I am feeling very weak. Having body ache in some joints. Can it be due to the side effect of these two. [ I am not taking them together ]
Also yesterday I tool tet vac injection as well.
Before yesterday, I was totally fine, only some fatigue was there. But from yesterday, I am feeling weak, no wish to eat.