Advice

So my boyfriend and I are trying to conceive and then all of a sudden this month I'm a week late on my period and having other symptoms such as being nausea in the mornings, having to pee all the time, tired, and sore nipples. I have taken 3 first response home test only one of which was in the morning and they have all been negative. I just had a blood test done at the doctors yesterday. I'm going crazy hoping for a positive. I keep feeling this tugging sensation which I felt when I was first pregnant with my daughter as well. Any advice or ideas....