Advice please!

This evening I’ve gotten into bed and I feel rotten. I’ve got shooting pain in my back, I’ve been sick three times and my stomach is doing absolute backflips. I’ve eaten a pre-made chicken salad from Asda about 3 hours prior to feeling like this as well as a little bit of chocolate. I’ve already taken paracetamol for the back pain and originally thought the stomach turning etc was heartburn so I’d had some gaviscon. I just wanted to ask whether feeling like this is normal. I didn’t feel like this with my first pregnancy and I’m just a little unsure of what to do. I’ve been sick to the point I have nothing else to throw up but that doesn’t stop me urging. Is it worth contact triage or should I assume this is some kind of stomach bug?