Helppp !!!

Right basically me and my partner are trying for a baby and we been ya know all week I’ve had some back pain, cramps and headache and a couple days ago I threw up but I think that was my anxiety as I throw up when it happens.. anyways I’ve took about 4 I’m not really sure how many and they have all come back negative however tonight I’m getting really bad mood swings like I wanna cry but then I’m happy the next moment... btw I’m not on my period till like the 21 of August I don’t know what’s wrong with me 🤔 any advice??