I've recently gone back to work following maternity/accrued annual leave. I ordinarily still breastfeed my daughter several times a day and throughout the night. My job means I'm out of the house for ~14 hours a day, two days a week. I'm not, however, being given opportunity to express whilst at work except for on my break, which could be 10 hours into my shift or not at all. I confirmed I'd still be breastfeeding during my return to work meeting, and gave notice in writing.
Since about a week after starting back, I've begun to feel continously nauseous. Not severe enough to cause me to vomit but enough to make eating difficult and looking after a toddler all day challenging. I've had it suggested that it is hormonal, and the only change I can attribute it to coincidences perfectly with starting to go the longest (by far) periods without breastfeeding.
I'm not really sure whether once in 12-13 hours is reasonable of them (in terms of the law or good practice), and if it is deemed sufficient as a blanket rule, how I can convey that it's potentially causing me some issues.