All those talking about working rights and safety during pregnancy, PLEASE have a look at maternityaction.org.uk. If you are not safe at work, you have full rights to be suspended on maternity grounds on FULL PAY. This is from their website....
"What should my employer do to protect my health and safety?
All employers are required by law to protect the health and safety of their workers. Your employer must carry out a workplace risk assessment of the risks to their workers as well as the risks to others affected by their business, such as visitors and contractors.
If your work could involve a risk to pregnant women or new mothers, the workplace risk assessment must also include an assessment of risks to new and expectant mothers arising from any ‘processes, working conditions, physical, biological and chemical agents’. Biological agents includes infectious diseases such as coronavirus Covid-19.
If the risk assessment reveals a risk, your employer must do all that is reasonable to remove it or prevent your exposure to it. Your employer must give you information on the risks and what action has been taken.
If you need health and safety adjustments, you must notify your employer in writing (e.g. email) that you are pregnant, breastfeeding or have given birth in the last six months.
Your employer must consider the risks and take action as follows:
Step 1: temporarily alter your working conditions or hours of work, if this is reasonable and avoids the risk, such as allowing extra breaks, ensuring that you can sit down and avoiding heavy lifting. This applies to all workers.
Step 2: If that is not possible or does not avoid the risk, your employer must offer you suitable alternative work on terms and conditions that are not substantially less favourable than your original job.
Step 3: If there is no suitable alternative work, your employer must suspend you on full pay for as long as necessary to avoid the risk.
Steps 2 and 3 apply to employees only and agency workers with more than 12 weeks in the same placement."
I have had to go down this route with my job (vet) and although it has been hard on my mental health being at home since March, at least I know my baby is as safe as possible.