Feeling faint and weak..

So for the past few days every time I wake up I feel extremely weak and lightheaded and it’s kinda hard for me to breathe. I take a shower every morning right after I wake up, but lately I get so lightheaded in the shower I can’t even stand up without feeling like falling over. I had my husband walk downstairs with me because I thought I was going to fall walking down them. It does get a bit better when I eat food. I’m just wondering if this is normal or should I call my doctor and tell her what’s going on? I’m 5w+5d today