I'm 2-3 weeks pregnant I really struggle to take tablets so what would I do about prenatal vitamins if I struggle taking tablets any other options?

Yes. There are some people who have great difficulty swallowing pills, whether pregnant or not. For these patients, there are several very good brands of vitamins, prenatal and others, which are available in liquid form. When mixed with juice, they are easy to take. My favorite mix is tomato or v-8 type juices.
Dont take. You can not take your Vitamins at this time until you are feeling better. You could try a chewable vitamin or even a kids gummy bear vitamin.
Prenatal vitamins. A number of companies make liquid prenatal vitamins. Consider this option. OR consider cognitive behavioral therapy to get over you issues with tablets. Take care & congratulations.