Symptoms 14 weeks/ 2nd trimester

Bree • Mom of a sweet little girl and pregnant with my 2nd blessing.
I've been having dizzy spells, fatigue and weird nauseating sensations. I just hit 14 weeks. I'm wondering what it may be related too. Obviously the obvious but does anyone think foods have a role? Specifically processed foods. I try to balance it out but I'm wondering if there is something specific causing the symptoms. Any insight is appreciated. TIA