Is this possible before missed period??

Melissa

I took a test and my period is due in two days. I took two different ones and they are negative. I have been trying for my third baby since April and tonight I threw up. So my question is can I get symptoms this bad before actually testing positive? And if so has anyone else gone through this and gotten a positive result? I read online and it can also be a phantom pregnancy but I’m just too eager to wait until I miss my period and thought it wouldn’t hurt to ask. Thanks in advance and baby dust to all!!