6 days late, all test negative. (3rd post)

So here's the thing on Nov 11th I had sex with my boyfriend. My period came on Nov 17th. I got my nexplanon inserted for the first time on Nov 29th(ofc they tested to see if I was pregnant before giving it to me but my doctor said it's not effective until a month and told me not to have birthday sex because I could get pregnant) my birthday was dec 1st I had sex anyways maybe 2 weeks after my birthday I was throwing up, waking up in the middle of the night, sometimes after certain meals and my boobs for some reason got super heavy. Not sore but swollen. The throwing up stopped but my boobs are still swollen and it's even uncomfortable to sleep on my stomach I toss and turn from side to side at night. I took two test both negative. It's been a week since the last test. Should I test again. My period is 6 days late.