Health issues prior to pregnancy?

So in January I came down with something after eating some pork. I felt very weak, shaky and dizzy and had bad upper stomach pains. I had similar went I went abroad a couple of years after eating pork and getting food poisoning. The only thing that helped me was taking omeprazole. I did this and went away briefly for a week. I feel this constant need to go number 2 and when I do it smells way worse than normal and has white/yellow bits in it. I’ve gone to the doctors many times n haven’t been that successful in finding out wtf is going on.

I had a stool test for any parasites which was negative and lots of different antibiotics to begin with.

I’m 6 weeks pregnant and still having these problems and am concerned that these types of problems will cause problems with my baby trying to grow properly and healthily. I am taking omeprazole twice a day which I’m allowed during pregnancy but it doesn’t seem to be helping, I will be limited trying to find out what this is whilst pregnant. I’m really struggling as feel no matter what I eat my body isn’t getting the nutrients it needs as I’m always shaky, drained now starting to get weaker and dizzy.

Has anyone had anything similar and could shed some light on what this could be?

I really need help!

Pregnancy is hard work as it is without having this on top as well!

Grateful for any help ❤️