I’ve been on antibiotics due to having a chest infection and since being on them I’ve noticed that I’ve been feeling more sick, cramps and horrendous migraines and having regular breakthrough bleeding. I spoke to my doctors and they were 100% not going to have any effects with my pills. I’m not sure what I’m going to do as it’s now effecting my work as I’m unable to get out of bed due to being so exhausted and constantly sleeping.

All you can do is rest and recover. It's what your body needs, give it some time. Your health is more important than work, don't feel guilty for taking the time off to recover. Don't forget to stay hydrated, and eat foods that are good for gut health since antibiotics can destroy your gut flora. Antibiotics can affect absorption of the pill if you experience severe diarrhoea over multiple days.

Antibiotics themselves can have side effects

Maybe you can talk to your dr about the side effects of the meds. That sounds very uncomfortable especially if you’re already sick and recovering