Major bloating, exhaustion, lots of phlegm and nausia

I am 7 weeks 3 days and generally I feel really good considering what my body is going through to make a healthy baby. However, I come home from work this morning with so much phlegm (which has been happening for a week now) but today it was worse it was stuck in the back of my throat making me gag leading to me start feeling sick. Anyone else having this? I am so exhausted as well my last night shift tonight as my boss won't put me on them since I've told her I'm pregnant but I am so exhausted ... worried I'm going to start falling asleep lol. Anyway just having a rant as I have had literally no other symptoms so count myself very lucky