May be side effect of medicines.

Dear sir / madam My wife 31 yrs old. Presently she is suffering from unknown symptoms. Its very difficult me to know the exact problem. Lets me explain. She was taking treatment for pregnancy and has PCOS. Dr give the following medicines 1. Tab letsi 2.5 2. Tab Ultra Q 100 3. Ecosprings some thing like After taking medicines we visit 2 days after. She had made scanning for ovulatory / anovulatory. She repeated same 5 times every 2 days and give dosages. After giving the injection SIFAVI 10000 at 4th  time. Problems facing Vomittings, weaknexplainess then again we explain the details Then she give 1. Tab ethic for keeping in vagina. 2. Tab hapygest From that time till know facing problems 1. Detour 2. Vomittings 3. Bad taste of toung 4. Too much weakness cloud even standing properly. I am afraid for cervical cancer. I just want to know its symptoms involved in this cancer. I could even understand. What to do. Kindly help me on this and suggest me to show which specialists.