Plan b symptoms a month after taking?

I was playing around with my boyfriend two days after my period ended. He started to rub around but he was never actually inside me. I made him stop, I was worried about precum that I went and got plan b and took it 17 hours later. I started to bleed 5 days after I took plan B and I bled for 5 days. It seemed to progress like a normal period, but it confused me because I had my period a week before. I waited for my normal period to come and I think it was a normal period about 24 days after I finished bleeding from the plan B. I took a pregnancy test before what I think was my normal period and it came out negative. A week after I finished what I think was my normal period I started getting bloated and nauseous. I have extra saliva in my mouth and a headache that won't go away. I feel gassy around my ovaries and uterus. I am just uncomfortable. I was took another pregnancy test and I haven't had sex or anything since that one time with my boyfriend because he had to move to a different state for his job and that was 42 days ago. If my pregnancy tests are coming up negative I am hoping they are correct now. But I cannot figure out this nausea. Does plan B give you pregnancy like symptoms this late? Or could I be pregnant and the tests just aren't showing it? I have an appointment with my gyno in a week, but can someone share any insight or similar experience?