PLEASE COMMENT. PCOS but could I be pregnant?!

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Hi ladies, so I have PCOS and I am 19 years old. I recently had intercourse 2 weeks ago and my fiancé ejaculated inside me. After that day I was having unprotected sex every second day after that with him. Now for the last two weeks, I noticed my boobs taking a different shape and they’ve become bigger and they are so tender and sore that I have to wear my bra really loose. I’ve been experiencing nausea in the middle of the night and dizziness in the morning. I tried eating my fav food today but just the look of it and the smell made me nearly vomit at work! 🤮 I’ve been having heaps of headaches and I’m so extremely tired during the day 😭 when it gets to night time I feel like I’m just gunna drop because of how heavy my boobs and body feels. My cervix is also really high and the cervix mucus is milky white and stretchy/stringy....I’ve never experienced these symptoms before...

I did take 2 home tests today and they both came out negative. Could it be a false negative? Could it just be too early to test? I am going to get my bloods taken tomorrow afternoon, do you think that will be negative as well?

Am I just over thinking and going crazy or could I be pregnant? Please comment your thoughts.