Girls, help me here!

So every single morning at 3 am, i get nausous and throw up. I had a baby three months ago and we have always used protection, im on birth control and he uses condoms (we really dont want to have another baby any time soon) but i dont know why all of a sudden im getting sick. Doctor gave me a medicine to take daily ( i just had a herpes outbreak and she told me i should be on the medicine from now on or wear condoms so i decided to give it a try🤷🏼‍♀️) so anyway, i thought it couldve been the meds but i stopped taking them to see if maybe that was the case and nope, still threw up at 3 AM today. Anyone else experience something like this?

No i havent taken a test yet because i didnt know if it could be possible