What could it be??? And what can help??

So lately I’ve been feeling bloated, nauseous, cramping, going to the bathroom a lot, eating a lot too, and just really nauseous... I also got sick with the cold. My sister in law who is pregnant also went threw this and was sick with the cold before she found out she is pregnant. husband and I did BD during my fertile week and it’s only been a few days dpo but all these symptoms I’m having is making me crazy lol. I hope I am pregnant or in the process... but what do you ladies think?? And what can help calm me with being nauseous???