Period Late (post in general ttc)


So I come home after work and my boyfriend is just staring at me. He said my boobs look substantially bigger which I didnt notice honestly. But my nipples have been so sore. I’ve been so tired. Only flaw is I took a pregnancy test on the 30th and it was negative. And I’m currently 15 days late. I took a blood test on the 23rd and I was .27 on my beta hcg. Idk what to think. Also 2 days ago I had ewcm. Idk if that means anything. Think I should give it another week before making an appointment? Advice?