First Trimester Complications? Should I call my doctor??

Im 11 weeks and 4 days with my second. Its been over 5 years since I was pregnant and feel a little out of sorts.

I was anemic in my first pregnancy and am luckily not this time around but Im still constantly light headed to the point I feel like I may pass out when standing. Im always drinking water but always feel dehydrated and am getting headaches regularly. The past few days I started getting chest pain on my left side when standing for more than a few minutes. I dont drink caffiene, im not on anything other than my prenatal, however Im having a really hard time eating food and have dropped 15 lbs already (Im a plus size woman however).

Ive written most of it off to just being pregnant but Im really starting to feel like this isnt normal. Should I contact my doctor or is this fairly normal at this point in pregnancy? 😭