Worried about docetaxal (breast cancer)

Hello, I'm 27 years old and was diagnosed with grade 2 invasive ducal carcinoma breast cancer her 2 positive er receptor positive and lympthnode cancer cells. I have finnished my 3rd cycle of fec treatment and will be having my first round of doxetaxel on 01/10. Ive had a really hard time on fec with tightness to my head, dizzy spells, anxiety through the roof and so on which lasts for about 7 daysand I'm really worried about  how I will react to doxetaxel please can you share your experiences with me xx