Pregnant

My husband and I have been trying for about a year to have a baby , my period is irregular so we have been using the every other day technique. On September 5th we began with me on fertilaid women and fertilaid ovaboost and him on fertilaid men and motility boost.

My last period was June 27th
The past two weeks I have noticed myself feeling habit off as well as my nipples always getting hard and my breasts feel firmer

I have taken diagnosis brand pregnancy tests but they always come negative. Could I be pregnant? I'm abit nervous to get excited because by this point it really doesn't seem that it is working and I feel that I could also be looking for symptoms and not actually pregnant