26 weeks + 4 days second pregnancy and im wondering if I should be concerned about this. Lately during this pregnancy I have experienced this happening (usually around lunch or afternoon) I will be working (sitting down job) and all of a sudden I get very dizzy and lightheaded feeling like i want to pass out. It happens at random or close to after I eat lunch etc. I also had heart palpatations and feeling like its hard to get a full breath. Sometimes at night it also happens if im laying down watching TV and change my position the room will start spinning. Has anyone else experienced this? I didn't have this with my last pregnancy and im not sure i need to be contacting my midwife or if It is normal